The i.MX53 ahci platform support is unused in mainline. To demotivate
people using it just remove it from the tree.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Add the documentation text for latency, target_latency & group_idle
tunnable parameters in the block/cfq-iosched.txt.
Also fix few typo(spelling) mistakes.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Language somewhat modified by Jens.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
* A couple imx35 clock fixes for regressions caused by common clock
framework conversion. The admux and iomux get disabled by common
clock framework late initcall, and hence causes problems.
* Add missing twd clock lookup in device tree. This becomes required
since commit bd60345 (ARM: use device tree to get smp_twd clock)
forces all DT boot to find lookup from device tree.
* Fix imx6q ldb_di clock parents mismatch per reference manual.
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Merge tag 'imx-fixes-3.9-5' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
From Shawn Guo <shawn.guo@linaro.org>:
The imx fixes for 3.9, take 5:
* A couple imx35 clock fixes for regressions caused by common clock
framework conversion. The admux and iomux get disabled by common
clock framework late initcall, and hence causes problems.
* Add missing twd clock lookup in device tree. This becomes required
since commit bd60345 (ARM: use device tree to get smp_twd clock)
forces all DT boot to find lookup from device tree.
* Fix imx6q ldb_di clock parents mismatch per reference manual.
* tag 'imx-fixes-3.9-5' of git://git.linaro.org/people/shawnguo/linux-2.6: (217 commits)
ARM i.MX6: Fix ldb_di clock selection
ARM: imx: provide twd clock lookup from device tree
ARM: imx35 Bugfix admux clock
ARM: clk-imx35: Bugfix iomux clock
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Add SMSC ethernet support to the bockw board.
This pull request is based on a merge of:
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git renesas-soc-r8a7778-for-v3.10
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git renesas-boards3-for-v3.10
The reason for merging with renesas-soc-r8a7778-for-v3.10 is
to provide pre-requisite SoC code to configure IRQ pins for the
SMSC ethernet.
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Merge tag 'renesas-boards-bockw-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/boards2
From Simon Horman <horms+renesas@verge.net.au>:
Renesas ARM-based SoC bockw board updates for v3.10
Add SMSC ethernet support to the bockw board.
This pull request is based on a merge of:
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git renesas-soc-r8a7778-for-v3.10
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas.git renesas-boards3-for-v3.10
The reason for merging with renesas-soc-r8a7778-for-v3.10 is
to provide pre-requisite SoC code to configure IRQ pins for the
SMSC ethernet.
* tag 'renesas-boards-bockw-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: bockw: enable network settings on bootargs
ARM: shmobile: bockw: add SMSC ethernet support
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Update to the r8a7778 SoC:
* Add SH Ethernet support
* Add r8a7778_init_irq_extpin() to allow configuration of IRQ0 - IRQ3
- This is a requirement for SMSC ethernet support
* Cleanup: remove PLATFORM_INFO macro
This pull request is based on:
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas renesas-soc2-for-v3.10
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Merge tag 'renesas-soc-r8a7778-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc2
From Simon Horman <horms+renesas@verge.net.au>:
Renesas ARM r8a7778 SoC update for v3.10
Update to the r8a7778 SoC:
* Add SH Ethernet support
* Add r8a7778_init_irq_extpin() to allow configuration of IRQ0 - IRQ3
- This is a requirement for SMSC ethernet support
* Cleanup: remove PLATFORM_INFO macro
This pull request is based on:
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas renesas-soc2-for-v3.10
* tag 'renesas-soc-r8a7778-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: R8A7778: add Ether support
ARM: shmobile: r8a7778: add r8a7778_init_irq_extpin()
ARM: shmobile: r8a7778: remove pointless PLATFORM_INFO()
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Update to the r8a7779 SoC:
* Add SH Ethernet support
* Add comment describing clock ratios
This pull request is based on:
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas renesas-soc2-for-v3.10
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Merge tag 'renesas-soc-r8a7779-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc2
From Simon Horman <horms+renesas@verge.net.au>:
Renesas ARM r8a7779 SoC update for v3.10
Update to the r8a7779 SoC:
* Add SH Ethernet support
* Add comment describing clock ratios
This pull request is based on:
git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas renesas-soc2-for-v3.10
* tag 'renesas-soc-r8a7779-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: R8A7779: add Ether support
ARM: shmobile: r8a7779: add each clocks ratio on comment area
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Use the r8a7790 timer init function on Lager
to make sure the architected timer is started
regardless of boot loader setting.
Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Implement a SoC-specific timer init function for
r8a7790 that makes sure the architected timer
is started regardless of boot loader setting.
Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
An AT91 SoC that doesn't have a subtype is shown as "Unknown"
in the Linux log message which is not correct.
This was leading to confusion so, add a "none" qualifier to
the subtype property and set this one in the appropriate cases.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Provides support for 1801 variant of stmpe gpio port expanders.
This chip has 18 gpios configurable as GPI, GPO, keypad matrix,
special key or dedicated key function.
Note that special/dedicated key function is not supported yet.
Signed-off-by: Jean-Nicolas Graux <jean-nicolas.graux@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
commit "fs: make binfmt support for #! scripts modular and removable"
made support for #!scripts optional - thus need to include the Kconfig
file to get all relevant BINFMT_*
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Currently ARC_HAS_LLSC can be influenced by platform for SMP only using
ARC_HAS_COH_LLSC. For !SMP it defaults to "y".
It turns out that some customers can't support it all, even in UP.
So we change the semantics, and use a negative dependency ARC_CANT_LLSC.
Any platform (independent of SMP or !SMP) can select it to disable LLSC.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
arch/arc/kernel/traps.c no longer compiles without explicitly including
asm/kprobes.h
Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
much all non-critical fixes for platform device initialization
that will be needed until we can drop the board-*.c files and
move to DT based boot.
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Merge tag 'omap-for-v3.10/board-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/boards
From Tony Lindgren <tony@atomide.com>:
Board related changes for v3.10 merge window. These are pretty
much all non-critical fixes for platform device initialization
that will be needed until we can drop the board-*.c files and
move to DT based boot.
* tag 'omap-for-v3.10/board-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: board-4430sdp: Provide regulator to pwm-backlight
ARM: OMAP: zoom: Use pwm stack for lcd and keyboard backlight
ARM: OMAP2+: omap2plus_defconfig: Add support for BMP085 pressure sensor
omap2+: Remove useless Makefile line
omap2+: Remove useless Makefile line
ARM: OMAP: RX-51: add missing regulator supply definitions for lis3lv02d
ARM: OMAP1: fix omap_udc registration
Includes an update to Linux 3.9-rc6
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This pull request enables CGROUPS in defconfig and also
cleans up mach-davinci to use IS_ENABLED() macro.
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Merge tag 'davinci-for-v3.10/board' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/boards
From Sekhar Nori <nsekhar@ti.com>:
v3.10 board updates for DaVinci
This pull request enables CGROUPS in defconfig and also
cleans up mach-davinci to use IS_ENABLED() macro.
* tag 'davinci-for-v3.10/board' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: use is IS_ENABLED macro
ARM: davinci: defconfig: enable CGROUPS
Includes an update to v3.9-rc3
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
According to the recent i.MX6 Quad technical reference manual, mode 0x4 (100b)
of the CCM_CS2DCR register (address 0x020C402C) bits [11-9] and [14-12] select
the PLL3 clock, and not the PLL3 PFD1 540M clock. In our code, the PLL3 root
clock is named 'pll3_usb_otg', select this instead of the 540M clock.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
While booting from device tree, imx6q used to provide twd clock lookup
by calling clk_register_clkdev() in clock driver. However, the commit
bd60345 (ARM: use device tree to get smp_twd clock) forces DT boot to
look up the clock from device tree. It causes the failure below when
twd driver tries to get the clock, and hence kernel has to calibrate the
local timer frequency.
smp_twd: clock not found -2
...
Calibrating local timer... 396.13MHz.
Fix the regression by providing twd clock lookup from device tree, and
remove the unused twd clk_register_clkdev() call from clock driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The admux clock seems to be the audmux clock as tests show. audmux does
not work without this clock enabled. Currently imx35 does not register a
clock device for audmux. This patch adds this registration. imx-audmux
driver already handles a clock device, so no changes are necessary
there.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This patch enables iomuxc_gate clock. It is necessary to be able to
reconfigure iomux pads. Without this clock enabled, the
clk_disable_unused function will disable this clock and the iomux pads
are not configurable anymore. This happens at every boot. After a reboot
(watchdog system reset) the clock is not enabled again, so all iomux pad
reconfigurations in boot code are without effect.
The iomux pads should be always configurable, so this patch always
enables it.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
There's already a device revision stored in the core data structure,
don't duplicate it in the CODEC driver.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The pull request adds support for MMC/SD and regulator on DA850 EVM.
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Merge tag 'davinci-for-v3.10/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc
From Sekhar Nori <nsekhar@ti.com>:
v3.10 DT updates for DaVinci
The pull request adds support for MMC/SD and regulator on DA850 EVM.
* tag 'davinci-for-v3.10/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: da850: override mmc DT node device name
ARM: davinci: da850: add mmc DT entries
mmc: davinci_mmc: add DT support
ARM: davinci: da850: add tps6507x regulator DT data
ARM: regulator: add tps6507x device tree data
Merged into soc branch rather than DT branch to avoid circular dependencies.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
a) adds support for eHRPWM clocks
b) Fix the way MMC/SD IP versions are communicated to driver
in preparation for DT support
c) Minor cleanup in debug-macro.S
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Merge tag 'davinci-for-v3.10/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/soc
From Sekhar Nori <nsekhar@ti.com>:
v3.10 SoC updates for DaVinci
a) adds support for eHRPWM clocks
b) Fix the way MMC/SD IP versions are communicated to driver
in preparation for DT support
c) Minor cleanup in debug-macro.S
* tag 'davinci-for-v3.10/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: davinci: remove test for undefined Kconfig macro
ARM: davinci: mmc: derive version information from device name
ARM: davinci: da850: add ECAP & EHRPWM clock nodes
ARM: davinci: clk framework support for enable/disable functionality
Includes an update to Linux 3.9-rc5
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
In order to convert the Tegra MMC driver to using mmc_of_parse(), some
bugs in the Tegra device-tree content need to be fixed first; it's
currently wrong but unused, and mmc_of_parse() causes that data to be
used for the first time.
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Merge tag 'tegra-for-3.10-fixes-for-mmc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into next/dt
From Stephen Warren <swarren@wwwdotorg.org>:
ARM: tegra: DT-related fixes needed by the MMC tree
In order to convert the Tegra MMC driver to using mmc_of_parse(), some
bugs in the Tegra device-tree content need to be fixed first; it's
currently wrong but unused, and mmc_of_parse() causes that data to be
used for the first time.
* tag 'tegra-for-3.10-fixes-for-mmc' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: dts: tegra: fix the activate polarity of cd-gpio in mmc host
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Remove perl from make headers_install by replacing a perl script (doing a
simple regex search and replace) with a smaller, faster, simpler,
POSIX-2008 shell script implementation. The new shell script is a single
for loop calling sed and piping its output through unifdef to produce the
target file.
Same as last time except for minor tweak to deal with code review from
here: http://lkml.indiana.edu/hypermail/linux/kernel/1302.3/00078.html
(Note that this drops the "arch" argument, which isn't used. Kbuild
already points to the right input files on the command line.)
Signed-off-by: Rob Landley <rob@landley.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Josh Boyer <jwboyer@redhat.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowell@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
have an Ethernet interface.
Little fixes mainly related to at91sam9x5 DT, IIO ADC bindings,
pinctrl for at91sam9260/g20 DT and the RTC addition.
Addition of the Acme Systems Aria G25 board.
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Merge tag 'at91-dt' of git://github.com/at91linux/linux-at91 into next/dt
From Nicolas Ferre <nicolas.ferre@atmel.com>:
One macb DT node move for 9x5 family: 9g15 doesn't
have an Ethernet interface.
Little fixes mainly related to at91sam9x5 DT, IIO ADC bindings,
pinctrl for at91sam9260/g20 DT and the RTC addition.
Addition of the Acme Systems Aria G25 board.
* tag 'at91-dt' of git://github.com/at91linux/linux-at91:
ARM: at91/at91sam9260.dtsi: fix u(s)art pinctrl encoding
ARM: at91: dts: add adc resolution stuff
ARM: at91: add Acme Systems Aria G25 board
ARM: at91/dt: fix macb node declaration
ARM: at91: remove partial parameter in bootargs for at91sam9x5ek.dtsi
ARM: at91/trivial: fix model name for SAM9G15-EK
ARM: at91/trivial: typos in compatible property
ARM: at91/at91sam9x5: add RTC node
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Let's not burden ia64 with checks in the common efivars code that we're not
writing too much data to the variable store. That kind of thing is an x86
firmware bug, plain and simple.
efi_query_variable_store() provides platforms with a wrapper in which they can
perform checks and workarounds for EFI variable storage bugs.
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the wrapper functions for getting and setting the driver data using
spi_device instead of using dev_{get|set}_drvdata with &spi->dev, so we
can directly pass a struct spi_device.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The registration of the "leds-gpio" device was using
"vexpress_sysreg_dev" as a parent before it was actually
set to something different than NULL.
Trivial fix by reordering the code.
Reported-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The abx500-clk driver is initiated at arch_initcall level. Moreover it
is relying on the ab8500-sysctrl API to be available. Therefore move
ab8500-sysctrl to arch_initcall level as well. The device is already
added before the abx500 clk device, thus it will be probed before as
well, which is exactly what we want.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This branch (patch) converts BCM2835 to support being built into a
multi-platform single zImage. This mostly entails a few small Kconfig
tweaks, move the earlyprintk implementation to the standard multi-
platform location, and deleting some unnecessary files.
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Merge tag 'bcm2835-for-3.10-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi into next/multiplatform
From Stephen Warren <swarren@wwwdotorg.org>:
ARM: bcm2835: convert to multi-platform
This branch (patch) converts BCM2835 to support being built into a
multi-platform single zImage. This mostly entails a few small Kconfig
tweaks, move the earlyprintk implementation to the standard multi-
platform location, and deleting some unnecessary files.
* tag 'bcm2835-for-3.10-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-rpi:
ARM: bcm2835: convert to multi-platform
Conflicts:
arch/arm/Kconfig
arch/arm/Kconfig.debug
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Currently we check to see if we obtained the Tightly Coupled Program
Memory (TCPM) base and only execute the code within the check if we
have it. It's more traditional to return early if we don't have it.
This way we can flatten most of the function's code down to a single
tab spacing.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Fix typo mistakes.
1. I think that it should be 'L' instead of 'V'.
2. and try to fix 'Front' instead of 'Frone'
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
CONFIG_HOTPLUG is going away as an option, cleanup CONFIG_HOTPLUG
ifdefs in i2c files.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
syscon.h header uses struct device_node in functions' declarations
without declaring it. This causes compilation warnings like:
include/linux/mfd/syscon.h:20: warning: ‘struct device_node’
declared inside parameter list
include/linux/mfd/syscon.h:20: warning: its scope is only this
definition or declaration, which is probably not what you want
Fix it by adding a forward declaration of struct device_node.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
SMBus read and write are supported by the emulation layer of i2c
framework if the controller doesn't have SMBus features.
I2C_M_RECV_LEN flag is used to let i2c drivers know rx length is not
yet determined but will be read to the first byte in rx buffer.
s3c2410 doesn't handle this flag. So only one byte is read from slave.
There fore following two features are added to the driver code.
1. skip rx length check if I2C_M_RECV_LEN is set and the length is 1.
2. add actual bytes to the rx length after reading first bytes if
I2C_M_RECV_LEN.
I2C_M_RECV_LEN is only set for SMBus command. So this code does not
affect legacy codes which only use i2c command for s3c2410.
Signed-off-by: Jaemin Yoo <jmin.yoo@samsung.com>
Tested-by: Prasanna Kumar <prasanna.ps@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
In order to be aware of prefree and free sections during FG_GC, let's start with
write_checkpoint().
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
If (ofs % (NIDS_PER_BLOCK + 1) == 0), the node is an indirect node block.
Signed-off-by: Zhihui Zhang <zzhsuny@gmail.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
In the previous version, f2fs uses global locks according to the usage types,
such as directory operations, block allocation, block write, and so on.
Reference the following lock types in f2fs.h.
enum lock_type {
RENAME, /* for renaming operations */
DENTRY_OPS, /* for directory operations */
DATA_WRITE, /* for data write */
DATA_NEW, /* for data allocation */
DATA_TRUNC, /* for data truncate */
NODE_NEW, /* for node allocation */
NODE_TRUNC, /* for node truncate */
NODE_WRITE, /* for node write */
NR_LOCK_TYPE,
};
In that case, we lose the performance under the multi-threading environment,
since every types of operations must be conducted one at a time.
In order to address the problem, let's share the locks globally with a mutex
array regardless of any types.
So, let users grab a mutex and perform their jobs in parallel as much as
possbile.
For this, I propose a new global lock scheme as follows.
0. Data structure
- f2fs_sb_info -> mutex_lock[NR_GLOBAL_LOCKS]
- f2fs_sb_info -> node_write
1. mutex_lock_op(sbi)
- try to get an avaiable lock from the array.
- returns the index of the gottern lock variable.
2. mutex_unlock_op(sbi, index of the lock)
- unlock the given index of the lock.
3. mutex_lock_all(sbi)
- grab all the locks in the array before the checkpoint.
4. mutex_unlock_all(sbi)
- release all the locks in the array after checkpoint.
5. block_operations()
- call mutex_lock_all()
- sync_dirty_dir_inodes()
- grab node_write
- sync_node_pages()
Note that,
the pairs of mutex_lock_op()/mutex_unlock_op() and
mutex_lock_all()/mutex_unlock_all() should be used together.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Add of_comptabile string to the ab8500-usb cell to allow the driver to
grab properties from device-tree when available.
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
