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Merge tag 'xtensa-next-20140123' of git://github.com/czankel/xtensa-linux
Pull Xtensa patches from Chris Zankel:
"The major changes are adding support for SMP for Xtensa, fixing and
cleaning up the ISS (simulator) network driver, and better support for
device trees"
* tag 'xtensa-next-20140123' of git://github.com/czankel/xtensa-linux: (40 commits)
xtensa: implement ndelay
xtensa: clean up udelay
xtensa: enable HAVE_PERF_EVENTS
xtensa: remap io area defined in device tree
xtensa: support default device tree buses
xtensa: initialize device tree clock sources
xtensa: xtfpga: fix definitions of platform devices
xtensa: standardize devicetree cpu compatible strings
xtensa: avoid duplicate of IO range definitions
xtensa: fix ATOMCTL register documentation
xtensa: Enable irqs after cpu is set online
xtensa: ISS: raise network polling rate to 10 times/sec
xtensa: remove unused XTENSA_ISS_NETWORK Kconfig parameter
xtensa: ISS: avoid simple_strtoul usage
xtensa: Switch to sched_clock_register()
xtensa: implement CPU hotplug
xtensa: add SMP support
xtensa: add MX irqchip
xtensa: clear timer IRQ unconditionally in its handler
xtensa: clean up do_interrupt/do_IRQ
...
MX is an interrupt distributor used in some SMP-capable xtensa
configurations.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Extract xtensa built-in interrupt controller implementation from
xtensa/kernel/irq.c and move it to other irqchips, providing way to
instantiate it from the device tree.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
This adds an irqchip driver and corresponding devicetree binding for the
secondary interrupt controllers based on Synopsys DesignWare IP dw_apb_ictl.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Jisheng Zhang <jszhang@marvell.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
These are changes that arrived a little late before the merge window,
or had dependencies on previous branches.
Highlights:
- ux500: misc. cleanup, fixup I2C devices
- exynos: DT updates for RTC; PM updates
- at91: DT updates for NAND; new platforms added to generic defconfig
- sunxi: DT updates: cubieboard2, pinctrl driver, gated clocks
- highbank: LPAE fixes, select necessary ARM errata
- omap: PM fixes and improvements; OMAP5 mailbox support
- omap: basic support for new DRA7xx SoCs
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Merge tag 'late-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late changes from Kevin Hilman:
"These are changes that arrived a little late before the merge window,
or had dependencies on previous branches.
Highlights:
- ux500: misc. cleanup, fixup I2C devices
- exynos: DT updates for RTC; PM updates
- at91: DT updates for NAND; new platforms added to generic defconfig
- sunxi: DT updates: cubieboard2, pinctrl driver, gated clocks
- highbank: LPAE fixes, select necessary ARM errata
- omap: PM fixes and improvements; OMAP5 mailbox support
- omap: basic support for new DRA7xx SoCs"
* tag 'late-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (60 commits)
ARM: dts: vexpress: Add CCI node to TC2 device-tree
ARM: EXYNOS: Skip C1 cpuidle state for exynos5440
ARM: EXYNOS: always enable PM domains support for EXYNOS4X12
ARM: highbank: clean-up some unused includes
ARM: sun7i: Enable the A20 clocks in the DTSI
ARM: sun6i: Enable clock support in the DTSI
ARM: sun5i: dt: Use the A10s gates in the DTSI
ARM: at91: at91_dt_defconfig: enable rm9200 support
ARM: dts: add ADC device tree node for exynos5420/5250
ARM: dts: Add RTC DT node to Exynos5420 SoC
ARM: dts: Update the "status" property of RTC DT node for Exynos5250 SoC
ARM: dts: Fix the RTC DT node name for Exynos5250
irqchip: mmp: avoid to include irqs head file
ARM: mmp: avoid to include head file in mach-mmp
irqchip: mmp: support irqchip
irqchip: move mmp irq driver
ARM: OMAP: AM33xx: clock: Add RNG clock data
ARM: OMAP: TI81XX: add always-on powerdomain for TI81XX
ARM: OMAP4: clock: Lock PLLs in the right sequence
ARM: OMAP: AM33XX: hwmod: Add hwmod data for debugSS
...
Move irq-mmp driver from mach-mmp directory into irqchip directory.
It's used to support multiple platform.
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Add irqchip driver for the ImgTec PowerDown Controller (PDC) as found in
the TZ1090. The PDC has a number of general system wakeup (SysWake)
interrupts (which would for example be connected to a power button or an
external peripheral), and a number of peripheral interrupts which can
also wake the system but are connected straight to specific low-power
peripherals (such as RTC or Infrared). It has a single interrupt output
for SysWakes, and individual interrupt outputs for each peripheral.
The driver demuxes the SysWake interrupt line, and passes the peripheral
interrupts straight through. It also handles the set_wake interrupt
operation to enable/disable the appropriate wake event bits.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: linux-metag@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
This interrupt controller is integrated in all Cortex-M3 and Cortex-M4
machines.
Support for this controller appeared in Catalin's Cortex tree based on
2.6.33 but was nearly completely rewritten.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Jonathan Austin <jonathan.austin@arm.com>
Cc: kernel@pengutronix.de
Link: http://lkml.kernel.org/r/1372231128-11802-1-git-send-email-u.kleine-koenig@pengutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The SOC interrupt controller driver for the Abilis Systems TB10x series of
SOCs based on ARC700 CPUs.
Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Signed-off-by: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Cc: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: devicetree-discuss@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1372177797-9458-1-git-send-email-christian.ruppert@abilis.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This patch adds an irqchip driver for the main interrupt controller found
on Marvell Orion SoCs (Kirkwood, Dove, Orion5x, Discovery Innovation).
Corresponding device tree documentation is also added.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Acked-by: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Gregory Clement <gregory.clement@free-electrons.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1370536034-23956-2-git-send-email-sebastian.hesselbarth@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
These are cleanups and smaller changes that either depend on earlier
feature branches or came in late during the development cycle.
We normally try to get all cleanups early, so these are the exceptions:
- A follow-up on the clocksource reworks, hopefully the last time
we need to merge clocksource subsystem changes through arm-soc.
A first set of patches was part of the original 3.10 arm-soc cleanup
series because of interdependencies with timer drivers now moved out
of arch/arm.
- Migrating the SPEAr13xx platform away from using auxdata for DMA
channel descriptions towards using information in device tree,
based on the earlier SPEAr multiplatform series
- A few follow-ups on the Atmel SAMA5 support and other changes
for Atmel at91 based on the larger at91 reworks.
- Moving the armada irqchip implementation to drivers/irqchip
- Several OMAP cleanups following up on the larger series already
merged in 3.10.
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Merge tag 'cleanup-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC late cleanups from Arnd Bergmann:
"These are cleanups and smaller changes that either depend on earlier
feature branches or came in late during the development cycle. We
normally try to get all cleanups early, so these are the exceptions:
- A follow-up on the clocksource reworks, hopefully the last time we
need to merge clocksource subsystem changes through arm-soc.
A first set of patches was part of the original 3.10 arm-soc
cleanup series because of interdependencies with timer drivers now
moved out of arch/arm.
- Migrating the SPEAr13xx platform away from using auxdata for DMA
channel descriptions towards using information in device tree,
based on the earlier SPEAr multiplatform series
- A few follow-ups on the Atmel SAMA5 support and other changes for
Atmel at91 based on the larger at91 reworks.
- Moving the armada irqchip implementation to drivers/irqchip
- Several OMAP cleanups following up on the larger series already
merged in 3.10."
* tag 'cleanup-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (50 commits)
ARM: OMAP4: change the device names in usb_bind_phy
ARM: OMAP2+: Fix mismerge for timer.c between ff931c82 and da4a686a
ARM: SPEAr: conditionalize SMP code
ARM: arch_timer: Silence debug preempt warnings
ARM: OMAP: remove unused variable
serial: amba-pl011: fix !CONFIG_DMA_ENGINE case
ata: arasan: remove the need for platform_data
ARM: at91/sama5d34ek.dts: remove not needed compatibility string
ARM: at91: dts: add MCI DMA support
ARM: at91: dts: add i2c dma support
ARM: at91: dts: set #dma-cells to the correct value
ARM: at91: suspend both memory controllers on at91sam9263
irqchip: armada-370-xp: slightly cleanup irq controller driver
irqchip: armada-370-xp: move IRQ handler to avoid forward declaration
irqchip: move IRQ driver for Armada 370/XP
ARM: mvebu: move L2 cache initialization in init_early()
devtree: add binding documentation for sp804
ARM: integrator-cp: convert use CLKSRC_OF for timer init
ARM: versatile: use OF init for sp804 timer
ARM: versatile: add versatile dtbs to dtbs target
...
There is no reason to keep the clksrc cleanups separate from the
other cleanups, and this resolves some merge conflicts.
Conflicts:
arch/arm/mach-spear/spear13xx.c
drivers/irqchip/Makefile
This is a rather large set of patches for device drivers that for one
reason or another the subsystem maintainer preferred to get merged
through the arm-soc tree. There are both new drivers as well as
existing drivers that are getting converted from platform-specific
code into standalone drivers using the appropriate subsystem
specific interfaces.
In particular, we can now have pinctrl, clk, clksource and irqchip
drivers in one file per driver, without the need to call into
platform specific interface, or to get called from platform specific
code, as long as all information about the hardware is provided
through a device tree.
Most of the drivers we touch this time are for clocksource. Since
now most of them are part of drivers/clocksource, I expect that we
won't have to touch these again from arm-soc and can let the
clocksource maintainers take care of these in the future.
Another larger part of this series is specific to the exynos platform,
which is seeing some significant effort in upstreaming and
modernization of its device drivers this time around, which
unfortunately is also the cause for the churn and a lot of the
merge conflicts.
There is one new subsystem that gets merged as part of this series:
the reset controller interface, which is a very simple interface
for taking devices on the SoC out of reset or back into reset.
Patches to use this interface on i.MX follow later in this merge
window, and we are going to have other platforms (at least tegra
and sirf) get converted in 3.11. This will let us get rid of
platform specific callbacks in a number of platform independent
device drivers.
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver changes from Olof Johansson:
"This is a rather large set of patches for device drivers that for one
reason or another the subsystem maintainer preferred to get merged
through the arm-soc tree. There are both new drivers as well as
existing drivers that are getting converted from platform-specific
code into standalone drivers using the appropriate subsystem specific
interfaces.
In particular, we can now have pinctrl, clk, clksource and irqchip
drivers in one file per driver, without the need to call into platform
specific interface, or to get called from platform specific code, as
long as all information about the hardware is provided through a
device tree.
Most of the drivers we touch this time are for clocksource. Since now
most of them are part of drivers/clocksource, I expect that we won't
have to touch these again from arm-soc and can let the clocksource
maintainers take care of these in the future.
Another larger part of this series is specific to the exynos platform,
which is seeing some significant effort in upstreaming and
modernization of its device drivers this time around, which
unfortunately is also the cause for the churn and a lot of the merge
conflicts.
There is one new subsystem that gets merged as part of this series:
the reset controller interface, which is a very simple interface for
taking devices on the SoC out of reset or back into reset. Patches to
use this interface on i.MX follow later in this merge window, and we
are going to have other platforms (at least tegra and sirf) get
converted in 3.11. This will let us get rid of platform specific
callbacks in a number of platform independent device drivers."
* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (256 commits)
irqchip: s3c24xx: add missing __init annotations
ARM: dts: Disable the RTC by default on exynos5
clk: exynos5250: Fix parent clock for sclk_mmc{0,1,2,3}
ARM: exynos: restore mach/regs-clock.h for exynos5
clocksource: exynos_mct: fix build error on non-DT
pinctrl: vt8500: wmt: Fix checking return value of pinctrl_register()
irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure
reset: NULL deref on allocation failure
reset: Add reset controller API
dt: describe base reset signal binding
ARM: EXYNOS: Add arm-pmu DT binding for exynos421x
ARM: EXYNOS: Add arm-pmu DT binding for exynos5250
ARM: EXYNOS: Enable PMUs for exynos4
irqchip: exynos-combiner: Correct combined IRQs for exynos4
irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq
ARM: EXYNOS: fix compilation error introduced due to common clock migration
clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3}
clk: exynos4: export clocks required for fimc-is
clk: samsung: Fix compilation error
clk: tegra: fix enum tegra114_clk to match binding
...
More multiplatform enablement for ARM platforms. The ones converted in
this branch are:
- bcm2835
- cns3xxx
- sirf
- nomadik
- msx
- spear
- tegra
- ux500
We're getting close to having most of them converted!
One of the larger platforms remaining is Samsung Exynos, and there are
a bunch of supporting patches in this merge window for it. There was a
patch in this branch to a early version of multiplatform conversion,
but it ended up being reverted due to need of more bake time. The
revert commit is part of the branch since it would have required
rebasing multiple dependent branches and they were stable by then.
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Merge tag 'multiplatform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC multiplatform updates from Olof Johansson:
"More multiplatform enablement for ARM platforms. The ones converted
in this branch are:
- bcm2835
- cns3xxx
- sirf
- nomadik
- msx
- spear
- tegra
- ux500
We're getting close to having most of them converted!
One of the larger platforms remaining is Samsung Exynos, and there are
a bunch of supporting patches in this merge window for it. There was
a patch in this branch to a early version of multiplatform conversion,
but it ended up being reverted due to need of more bake time. The
revert commit is part of the branch since it would have required
rebasing multiple dependent branches and they were stable by then"
* tag 'multiplatform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (70 commits)
mmc: sdhci-s3c: Fix operation on non-single image Samsung platforms
clocksource: nomadik-mtu: fix up clocksource/timer
Revert "ARM: exynos: enable multiplatform support"
ARM: SPEAr13xx: Fix typo "ARCH_HAVE_CPUFREQ"
ARM: exynos: enable multiplatform support
rtc: s3c: make header file local
mtd: onenand/samsung: make regs-onenand.h file local
thermal/exynos: remove unnecessary header inclusions
mmc: sdhci-s3c: remove platform dependencies
ARM: samsung: move mfc device definition to s5p-dev-mfc.c
ARM: exynos: move debug-macro.S to include/debug/
ARM: exynos: prepare for sparse IRQ
ARM: exynos: introduce EXYNOS_ATAGS symbol
ARM: tegra: build assembly files with -march=armv7-a
ARM: Push selects for TWD/SCU into machine entries
ARM: ux500: build hotplug.o for ARMv7-a
ARM: ux500: move to multiplatform
ARM: ux500: make remaining headers local
ARM: ux500: make irqs.h local to platform
ARM: ux500: get rid of <mach/[hardware|db8500-regs].h>
...
When the Marvell Armada 370/XP support was included in the kernel, the
drivers/irqchip/ directory didn't exist and the minimal infrastructure
in it also didn't exist. Now that we have those things in place, we
move the Armada 370/XP IRQ controller driver from
arch/arm/mach-mvebu/irq-armada-370-xp.c to
drivers/irqchip/irq-armada-370-xp.c.
Note in order to reduce code movement and therefore ease the review of
this patch, we intentionally introduce a forward declaration of
armada_370_xp_handle_irq(). It is in fact not needed because this
handler can now simply be implemented before
armada_370_xp_mpic_of_init(). That will be done in the next commit.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This patch moves the arch-vt8500 irq code to drivers/irqchip and converts
it to use the new IRQCHIP_DECLARE and irqchip_init. This allows the removal
of some more functions from common.h
Signed-off-by: Tony Prisk <linux@prisktech.co.nz>
Signed-off-by: Olof Johansson <olof@lixom.net>
- Remove sunxi.dtsi
- Switch to clocksource/irqchip device tree handlers
- Cleanup the watchdog code
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Merge tag 'sunxi-cleanup-for-3.10' of git://github.com/mripard/linux into next/cleanup
From Maxime Ripard:
Cleanups for Allwinner sunXi architecture:
- Remove sunxi.dtsi
- Switch to clocksource/irqchip device tree handlers
- Cleanup the watchdog code
* tag 'sunxi-cleanup-for-3.10' of git://github.com/mripard/linux:
ARM: sunxi: Rework the restart code
irqchip: sunxi: Rename sunxi to sun4i
irqchip: sunxi: Make use of the IRQCHIP_DECLARE macro
clocksource: sunxi: Rename sunxi to sun4i
clocksource: sunxi: make use of CLKSRC_OF
clocksource: sunxi: Cleanup the timer code
clocksource: make CLOCKSOURCE_OF_DECLARE type safe
Signed-off-by: Olof Johansson <olof@lixom.net>
Add/change conflict in drivers/clocksource/Makefile resolved.
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Merge tag 'irq-s3c24xx-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/drivers
From Kukjin Kim <kgene.kim@samsung.com>:
s3c24xx irq cleanup and move into drivers/irqchip
* tag 'irq-s3c24xx-for-v3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
irqchip: s3c24xx: add devicetree support
irqchip: s3c24xx: make interrupt handling independent of irq_domain structure
irqchip: s3c24xx: globally keep track of the created intc instances
irqchip: s3c24xx: add irq_set_type callback for basic interrupt types
irqchip: s3c24xx: fix irqlist of second s3c2416 controller
irqchip: s3c24xx: fix comments on some camera interrupts
ARM: S3C24XX: move irq driver to drivers/irqchip
ARM: S3C24XX: add handle_irq function
ARM: S3C24XX: make s3c24xx_init_intc static
ARM: S3C24XX: move s3c24xx_init_irq to s3c2410_init_irq
ARM: S3C24XX: fix irq parent check
ARM: S3C24XX: fix redundant checks in the irq mapping function
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
During the introduction of the Allwinner SoC platforms, sunxi was
initially meant as a generic name for all the variants of the Allwinner
SoC.
It was ok at the time of the support of only the A10 and A13 that
looks pretty much the same, but it's beginning to be troublesome with
the future addition of the Allwinner A31 (sun6i) that is quite
different, and would introduce some weird logic, where sunxi would
actually mean in some case sun4i and sun5i but without sun6i...
Moreover, it makes the compatible strings naming scheme not consistent
with other architectures, where usually for this kind of compability, we
just use the oldest SoC name that has this IP, so let's do just this.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This move is necessary to make use of the irqchip infrastructure
for the following devicetree support for s3c24xx architectures.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Move icoll.c into drivers/irqchip as irq-mxs.c, and along with the
renaming, change the driver to use IRQCHIP_DECLARE.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This updates the irqchip drier for prima2 to the current practices by
moving it into drivers/irqchip and integrating it into the irqchip_init
infrastructure. We also now use a linear irq domain as a preparation
for sparse IRQ suport.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
This patch adds a driver for external IRQ pins connected
to the IRQC hardware block on recent SoCs from Renesas.
The IRQC hardware block is used together with more
recent ARM based SoCs using the GIC. As usual the GIC
requires external IRQ trigger setup somewhere else
which in this particular case happens to be IRQC.
This driver implements the glue code needed to configure
IRQ trigger and also handle mask/unmask and demux of
external IRQ pins hooked up from the IRQC to the GIC.
Tested on r8a73a4 but is designed to work with a wide
range of SoCs. The driver requires one GIC SPI per
external IRQ pin to operate. Each driver instance
will handle up to 32 external IRQ pins.
The SoCs using this driver are currently mainly used
together with regular platform devices so this driver
allows configuration via platform data to support things
like static interrupt base address. DT support will
be added incrementally in the not so distant future.
Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This patch adds a driver for external IRQ pins connected
to the INTC block on recent SoCs from Renesas.
The INTC hardware block usually contains a rather wide
range of features ranging from external IRQ pin handling
to legacy interrupt controller support. On older SoCs
the INTC is used as a general purpose interrupt controller
both for external IRQ pins and on-chip devices.
On more recent ARM based SoCs with Cortex-A9 the main
interrupt controller is the GIC, but IRQ trigger setup
still need to happen in the INTC hardware block.
This driver implements the glue code needed to configure
IRQ trigger and also handle mask/unmask and demux of
external IRQ pins hooked up from the INTC to the GIC.
Tested on sh73a0 and r8a7779. The hardware varies quite
a bit with SoC model, for instance register width and
bitfield widths vary wildly. The driver requires one GIC
SPI per external IRQ pin to operate. Each driver instance
will handle up to 8 external IRQ pins.
The SoCs using this driver are currently mainly used
together with regular platform devices so this driver
allows configuration via platform data to support things
like static interrupt base address. DT support will
be added incrementally in the not so distant future.
Signed-off-by: Magnus Damm <damm@opensource.se>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:
- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()
Signed-off-by: James Hogan <james.hogan@imgtec.com>
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Merge tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull new ImgTec Meta architecture from James Hogan:
"This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:
- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of
metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()"
* tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits)
metag: Provide dma_get_sgtable()
metag: prom.h: remove declaration of metag_dt_memblock_reserve()
metag: copy devicetree to non-init memory
metag: cleanup metag_ksyms.c includes
metag: move mm/init.c exports out of metag_ksyms.c
metag: move usercopy.c exports out of metag_ksyms.c
metag: move setup.c exports out of metag_ksyms.c
metag: move kick.c exports out of metag_ksyms.c
metag: move traps.c exports out of metag_ksyms.c
metag: move irq enable out of irqflags.h on SMP
genksyms: fix metag symbol prefix on crc symbols
metag: hugetlb: convert to vm_unmapped_area()
metag: export clear_page and copy_page
metag: export metag_code_cache_flush_all
metag: protect more non-MMU memory regions
metag: make TXPRIVEXT bits explicit
metag: kernel/setup.c: sort includes
perf: Enable building perf tools for Meta
metag: add boot time LNKGET/LNKSET check
metag: add __init to metag_cache_probe()
...
Meta core internal interrupts (from HWSTATMETA and friends) are vectored
onto the TR1 core trigger for the current thread. This is demultiplexed
in irq-metag.c to individual Linux IRQs for each internal interrupt.
External SoC interrupts (from HWSTATEXT and friends) are vectored onto
the TR2 core trigger for the current thread. This is demultiplexed in
irq-metag-ext.c to individual Linux IRQs for each external SoC interrupt.
The external irqchip has devicetree bindings for configuring the number
of irq banks and the type of masking available.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Dom Cobley <popcornmix@gmail.com>
Cc: Simon Arlott <simon@fire.lp0.eu>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-doc@vger.kernel.org
Exynos boot is broken with commit 0529e315 (ARM: use common irqchip_init
for GIC init). This commit split the irqchip initialization into 2 calls
to of_irq_init. This does not work because of_irq_init requires interrupt
parents to be in the match list.
Rather than reverting exynos changes, make it do the proper thing by using
IRQCHIP_DECLARE. This requires moving the combiner code to drivers/irqchip.
Reported-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-samsung-soc@vger.kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
Now that we have drivers/irqchip, move VIC irqchip to drivers/irqchip.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Now that we have drivers/irqchip, move GIC irqchip to drivers/irqchip. This
is necessary to share the GIC with arm and arm64.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
With the recent creation of the drivers/irqchip/ directory, it is
desirable to move irq controller drivers here. At the moment, the only
driver here is irq-bcm2835, the driver for the irq controller found in
the ARM BCM2835 SoC, present in Rasberry Pi systems. This irq
controller driver was exporting its initialization function and its
irq handling function through a header file in
<linux/irqchip/bcm2835.h>.
When proposing to also move another irq controller driver in
drivers/irqchip, Rob Herring raised the very valid point that moving
things to drivers/irqchip was good in order to remove more stuff from
arch/arm, but if it means adding gazillions of headers files in
include/linux/irqchip/, it would not be very nice.
So, upon the suggestion of Rob Herring and Arnd Bergmann, this commit
introduces a small infrastructure that defines a central
irqchip_init() function in drivers/irqchip/irqchip.c, which is meant
to be called as the ->init_irq() callback of ARM platforms. This
function calls of_irq_init() with an array of match strings and init
functions generated from a special linker section.
Note that the irq controller driver initialization function is
responsible for setting the global handle_arch_irq() variable, so that
ARM platforms no longer have to define the ->handle_irq field in their
DT_MACHINE structure.
A global header, <linux/irqchip.h> is also added to expose the single
irqchip_init() function to the reset of the kernel.
A further commit moves the BCM2835 irq controller driver to this new
small infrastructure, therefore removing the include/linux/irqchip/
directory.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
[rob.herring: reword commit message to reflect use of linker sections.]
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
This branch contains device-tree updates for the SPEAr platform.
They had dependencies on earlier branches from this merge window,
which is why they were broken out in a separate branch.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device-tree updates, take 2, from Olof Johansson:
"This branch contains device-tree updates for the SPEAr platform. They
had dependencies on earlier branches from this merge window, which is
why they were broken out in a separate branch."
* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/
ARM: SPEAr320: DT: Add SPEAr 320 HMI board support
ARM: SPEAr3xx: DT: add shirq node for interrupt multiplexor
ARM: SPEAr3xx: shirq: simplify and move the shared irq multiplexor to DT
ARM: SPEAr1310: Fix AUXDATA for compact flash controller
ARM: SPEAr13xx: Remove fields not required for ssp controller
ARM: SPEAr1310: Move 1310 specific misc register into machine specific files
ARM: SPEAr: DT: Update device nodes
ARM: SPEAr: DT: add uart state to fix warning
ARM: SPEAr: DT: Modify DT bindings for STMMAC
ARM: SPEAr: DT: Fix existing DT support
ARM: SPEAr: DT: Update partition info for MTD devices
ARM: SPEAr: DT: Update pinctrl list
ARM: SPEAr13xx: DT: Add spics gpio controller nodes
This patch moves shirq interrupt controllers driver and header file out of
plat-spear directory. It is moved to drivers/irqchip/ directory.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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Merge tag 'tags/sunxi-support-for-3.8' of git://github.com/mripard/linux into next/soc
From Maxime Ripard:
Allwinner SoC support for 3.8
* tag 'tags/sunxi-support-for-3.8' of git://github.com/mripard/linux:
ARM: sunxi: Add entry to MAINTAINERS
ARM: sunxi: Add device tree for the A13 and the Olinuxino board
ARM: sunxi: Add earlyprintk support
ARM: sunxi: Add basic support for Allwinner A1x SoCs
irqchip: sunxi: Add irq controller driver
clocksource: sunxi: Add Allwinner A1X Timer Driver
clk: sunxi: Add dummy fixed rate clock for Allwinner A1X SoCs
Signed-off-by: Olof Johansson <olof@lixom.net>
This moves the Versatile FPGA interrupt controller driver, used in
the Integrator/AP, Integrator/CP and some Versatile boards, out
of arch/arm/plat-versatile and down to drivers/irqchip where we
have consensus that such drivers belong. The header file is
consequently moved to <linux/platform_data/irq-versatile-fpga.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The BCM2835 contains a custom interrupt controller, which supports 72
interrupt sources using a 2-level register scheme. The interrupt
controller, or the HW block containing it, is referred to occasionally
as "armctrl" in the SoC documentation, hence the symbol naming in the
code.
This patch was extracted from git://github.com/lp0/linux.git branch
rpi-split as of 2012/09/08, and modified as follows:
* s/bcm2708/bcm2835/.
* Modified device tree vendor prefix.
* Moved implementation to drivers/irchip/.
* Added devicetree documentation, and hence removed list of IRQs from
bcm2835.dtsi.
* Changed shift in MAKE_HWIRQ() and HWIRQ_BANK() from 8 to 5 to reduce
the size of the hwirq space, and pass the total size of the hwirq space
to irq_domain_add_linear(), rather than just the number of valid hwirqs;
the two are different due to the hwirq space being sparse.
* Added the interrupt controller DT node to the top-level of the DT,
rather than nesting it inside a /axi node. Hence, changed the reg value
since /axi had a ranges property. This seems simpler to me, but I'm not
sure if everyone will like this change or not.
* Don't set struct irq_domain_ops.map = irq_domain_simple_map, hence
removing the need to patch include/linux/irqdomain.h or
kernel/irq/irqdomain.c.
* Simplified armctrl_of_init() using of_iomap().
* Removed unused IS_VALID_BANK()/IS_VALID_IRQ() macros.
* Renamed armctrl_handle_irq() to prevent possible symbol clashes.
* Made armctrl_of_init() static.
* Removed comment "Each bank is registered as a separate interrupt
controller" since this is no longer true.
* Removed FSF address from license header.
* Added my name to copyright header.
Signed-off-by: Chris Boot <bootc@bootc.net>
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Dom Cobley <dc4@broadcom.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
