Commit Graph

31 Commits

Author SHA1 Message Date
Jonas Jensen
4de563ae82 irqchip: Add support for MOXA ART SoCs
This patch adds an irqchip driver for the main interrupt controller
found on MOXA ART SoCs.

Signed-off-by: Jonas Jensen <jonas.jensen@gmail.com>
Cc: grant.likely@secretlab.ca
Cc: thomas.petazzoni@free-electrons.com
Cc: arnd@arndb.de
Cc: u.kleine-koenig@pengutronix.de
Cc: linux@arm.linux.org.uk
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1372941531-6393-1-git-send-email-jonas.jensen@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2013-07-05 11:39:25 +02:00
Uwe Kleine-König
292ec08049 irqchip: Add support for ARMv7-M NVIC
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>
2013-06-26 11:29:38 +02:00
Christian Ruppert
b06eb0173e irqchip: Add TB10x interrupt controller driver
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>
2013-06-25 18:54:21 +02:00
Sebastian Hesselbarth
9dbd90f17e irqchip: Add support for Marvell Orion SoCs
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>
2013-06-11 16:18:50 +02:00
Linus Torvalds
1bf25e78af ARM: arm-soc: late cleanups
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
  ...
2013-05-07 11:22:14 -07:00
Arnd Bergmann
442a33ebce Merge branch 'late/clksrc' into late/cleanup
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
2013-05-06 23:43:45 +02:00
Linus Torvalds
6fa52ed33b ARM: arm-soc driver changes for 3.10
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
  ...
2013-05-04 12:31:18 -07:00
Linus Torvalds
99c6bcf46d ARM: arm-soc multiplatform updates for 3.10
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>
  ...
2013-05-02 09:38:16 -07:00
Thomas Petazzoni
9339d432fd irqchip: move IRQ driver for Armada 370/XP
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>
2013-04-15 19:34:36 +00:00
Tony Prisk
06ff14c054 irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure
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>
2013-04-12 22:43:24 -07:00
Olof Johansson
b9d5868e34 Cleanups for Allwinner sunXi architecture:
- 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.
2013-04-11 03:39:00 -07:00
Arnd Bergmann
894b7382cf s3c24xx irq cleanup and move into drivers/irqchip
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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>
2013-04-09 22:05:50 +02:00
Arnd Bergmann
71f6424023 Merge branch 'mxs/cleanup' into next/multiplatform
This is a dependency for mxs/multiplatform

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Conflicts:
	drivers/clocksource/Makefile
2013-04-09 16:02:14 +02:00
Maxime Ripard
d7fbc6ca35 irqchip: sunxi: Rename sunxi to sun4i
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>
2013-04-08 21:42:46 +02:00
Heiko Stuebner
8a407835be ARM: S3C24XX: move irq driver to drivers/irqchip
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>
2013-04-04 14:55:43 +09:00
Shawn Guo
6a8e95b071 ARM: mxs: move icoll driver into drivers/irqchip
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>
2013-04-01 16:30:04 +08:00
Arnd Bergmann
60dbd7680f ARM: sirf: move irq driver to drivers/irqchip
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>
2013-03-25 12:29:39 +01:00
Magnus Damm
fbc83b7f59 irqchip: Renesas IRQC driver
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>
2013-03-18 21:26:06 +09:00
Magnus Damm
443580486e irqchip: Renesas INTC External IRQ pin driver
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>
2013-03-18 21:26:05 +09:00
Linus Torvalds
8fd5e7a2d9 ImgTec Meta architecture changes for v3.9-rc1
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()
  ...
2013-03-03 12:06:09 -08:00
James Hogan
5698c50d9d metag: Internal and external irqchips
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
2013-03-02 20:09:48 +00:00
Rob Herring
a900e5d997 ARM: exynos: move exynos4210-combiner to drivers/irqchip
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>
2013-02-12 14:51:10 -08:00
Rob Herring
44430ec068 irqchip: Move ARM VIC to drivers/irqchip
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>
2013-01-12 10:52:14 -06:00
Rob Herring
81243e444c irqchip: Move ARM GIC to drivers/irqchip
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>
2013-01-12 10:47:31 -06:00
Thomas Petazzoni
f6e916b820 irqchip: add basic infrastructure
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>
2013-01-10 11:44:38 -06:00
Linus Torvalds
0beb58783f ARM: arm-soc: Device-tree updates, take 2
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
2012-12-14 14:42:53 -08:00
Viresh Kumar
df1590d9ae ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/
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>
2012-11-26 16:55:33 +05:30
Olof Johansson
5ffd785402 Allwinner SoC support for 3.8
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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>
2012-11-20 22:14:59 -08:00
Maxime Ripard
afd24e1468 irqchip: sunxi: Add irq controller driver
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
CC: Thomas Gleixner <tglx@linutronix.de>
2012-11-16 21:56:51 +01:00
Linus Walleij
2389d50143 ARM: plat-versatile: move FPGA irq driver to drivers/irqchip
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>
2012-11-04 18:09:12 +01:00
Simon Arlott
89214f009c ARM: bcm2835: add interrupt controller driver
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>
2012-09-19 19:08:37 -06:00