- Use PATCH_PHYS_TO_VIRT and AUTO_ZRELADDR.
- Support cascaded interrupts on the SIC.
- Complete clock implementation for the IM-PD1.
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Merge tag 'integrator-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator into next/drivers
From Linus Walleij:
Some Integrator patches that matured for v3.14:
- Use PATCH_PHYS_TO_VIRT and AUTO_ZRELADDR.
- Support cascaded interrupts on the SIC.
- Complete clock implementation for the IM-PD1.
* tag 'integrator-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator:
clk: versatile: fixup IM-PD1 clock implementation
clk: versatile: pass a name to ICST clock provider
ARM: integrator: pass parent IRQ to the SIC
irqchip: versatile FPGA: support cascaded interrupts from DT
ARM: integrator: Default enable ARM_PATCH_PHYS_VIRT, AUTO_ZRELADDR
Signed-off-by: Olof Johansson <olof@lixom.net>
The Versatile FPGA interrupt controller supports cascading interrupts,
i.e. that its output is connected to the input of another interrupt
controller. This makes it possible to pass a parent interrupt from
the device tree and print it in the boot log if applicable.
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---------------------------
This pull request contains updates
to DaVinci GPIO driver and the
resultant platform code changes. The
updates include DT-conversion and
changes to make the driver cross-platform
ready.
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Merge tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers
From Sekhar Nori:
DaVinci GPIO driver updates
---------------------------
This pull request contains updates to DaVinci GPIO driver and the
resultant platform code changes. The updates include DT-conversion and
changes to make the driver cross-platform ready.
* tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
gpio: davinci: don't create irq_domain in case of unbanked irqs
gpio: davinci: use chained_irq_enter/chained_irq_exit API
gpio: davinci: add OF support
gpio: davinci: remove unused variable intc_irq_num
gpio: davinci: convert to use irqdomain support.
gpio: introduce GPIO_DAVINCI kconfig option
gpio: davinci: get rid of DAVINCI_N_GPIO
gpio: davinci: use {readl|writel}_relaxed() instead of __raw_*
Signed-off-by: Olof Johansson <olof@lixom.net>
Value 0 of the sense selection field of CONFIG_n register means "disable event
detection" and serves in irqc_sense[] for marking the invalid values of the IRQ
type (by just omitting initializers). There is no need for INTC_IRQ_SENSE_VALID
and hence INTC_IRQ_SENSE() as all field values matching to the valid IRQ types
are non-zero anyway.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Now when lazy interrupt disable has been enabled in the driver
then extend the code to set IRQCHIP_MASK_ON_SUSPEND which tells
the core that only IRQs marked as wakeups need to stay enabled
during Suspend-to-RAM.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Set the ->irq_enable() and ->irq_disable() methods to NULL
to enable lazy disable of interrupts. This by itself provides
some level of optimization, but is mainly enabled as ground
work for future Suspend-to-RAM wake up support.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Pull irq fixes from Thomas Gleixner:
- Correction of fuzzy and fragile IRQ_RETVAL macro
- IRQ related resume fix affecting only XEN
- ARM/GIC fix for chained GIC controllers
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: Gic: fix boot for chained gics
irq: Enable all irqs unconditionally in irq_resume
genirq: Correct fuzzy and fragile IRQ_RETVAL() definition
Replace irq_domain_add_simple with "irq_domain_add_linear" in order to use
linear irq domain, and to remove hardcoded irq_base_value.
Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
As of c0114709ed: "irqchip: gic: Perform the gic_secondary_init() call
via CPU notifier", booting on a platform with chained gics (e.g.
Realview EB ARM11MPCore) will result in the gic_cpu_notifier being
registered twice, corrupting the cpu notifier list and rendering the
platform unbootable.
This patch ensures that we only register the notifier for the first
gic, allowing platforms with chained gics to boot. At the same time we
limit the pointlessly duplicated calls to set_smp_cross_call and
set_handle_irq to the first gic registered.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: marc.zyngier@arm.com
Cc: rob.herring@calxeda.com
Cc: olof@lixom.net
Link: http://lkml.kernel.org/r/1385648500-29048-1-git-send-email-mark.rutland@arm.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull ARM updates from Russell King:
"Included in this series are:
1. BE8 (modern big endian) changes for ARM from Ben Dooks
2. big.Little support from Nicolas Pitre and Dave Martin
3. support for LPAE systems with all system memory above 4GB
4. Perf updates from Will Deacon
5. Additional prefetching and other performance improvements from Will.
6. Neon-optimised AES implementation fro Ard.
7. A number of smaller fixes scattered around the place.
There is a rather horrid merge conflict in tools/perf - I was never
notified of the conflict because it originally occurred between Will's
tree and other stuff. Consequently I have a resolution which Will
forwarded me, which I'll forward on immediately after sending this
mail.
The other notable thing is I'm expecting some build breakage in the
crypto stuff on ARM only with Ard's AES patches. These were merged
into a stable git branch which others had already pulled, so there's
little I can do about this. The problem is caused because these
patches have a dependency on some code in the crypto git tree - I
tried requesting a branch I can pull to resolve these, and all I got
each time from the crypto people was "we'll revert our patches then"
which would only make things worse since I still don't have the
dependent patches. I've no idea what's going on there or how to
resolve that, and since I can't split these patches from the rest of
this pull request, I'm rather stuck with pushing this as-is or
reverting Ard's patches.
Since it should "come out in the wash" I've left them in - the only
build problems they seem to cause at the moment are with randconfigs,
and since it's a new feature anyway. However, if by -rc1 the
dependencies aren't in, I think it'd be best to revert Ard's patches"
I resolved the perf conflict roughly as per the patch sent by Russell,
but there may be some differences. Any errors are likely mine. Let's
see how the crypto issues work out..
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (110 commits)
ARM: 7868/1: arm/arm64: remove atomic_clear_mask() in "include/asm/atomic.h"
ARM: 7867/1: include: asm: use 'int' instead of 'unsigned long' for 'oldval' in atomic_cmpxchg().
ARM: 7866/1: include: asm: use 'long long' instead of 'u64' within atomic.h
ARM: 7871/1: amba: Extend number of IRQS
ARM: 7887/1: Don't smp_cross_call() on UP devices in arch_irq_work_raise()
ARM: 7872/1: Support arch_irq_work_raise() via self IPIs
ARM: 7880/1: Clear the IT state independent of the Thumb-2 mode
ARM: 7878/1: nommu: Implement dummy early_paging_init()
ARM: 7876/1: clear Thumb-2 IT state on exception handling
ARM: 7874/2: bL_switcher: Remove cpu_hotplug_driver_{lock,unlock}()
ARM: footbridge: fix build warnings for netwinder
ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu
ARM: fix misplaced arch_virt_to_idmap()
ARM: 7848/1: mcpm: Implement cpu_kill() to synchronise on powerdown
ARM: 7847/1: mcpm: Factor out logical-to-physical CPU translation
ARM: 7869/1: remove unused XSCALE_PMU Kconfig param
ARM: 7864/1: Handle 64-bit memory in case of 32-bit phys_addr_t
ARM: 7863/1: Let arm_add_memory() always use 64-bit arguments
ARM: 7862/1: pcpu: replace __get_cpu_var_uses
ARM: 7861/1: cacheflush: consolidate single-CPU ARMv7 cache disabling code
...
Pull IRQ changes from Ingo Molnar:
"The biggest change this cycle are the softirq/hardirq stack
interaction and nesting fixes, cleanups and reorganizations from
Frederic. This is the longer followup story to the softirq nesting
fix that is already upstream (commit ded7975475: "irq: Force hardirq
exit's softirq processing on its own stack")"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: bcm2835: Convert to use IRQCHIP_DECLARE macro
powerpc: Tell about irq stack coverage
x86: Tell about irq stack coverage
irq: Optimize softirq stack selection in irq exit
irq: Justify the various softirq stack choices
irq: Improve a bit softirq debugging
irq: Optimize call to softirq on hardirq exit
irq: Consolidate do_softirq() arch overriden implementations
x86/irq: Correct comment about i8259 initialization
Most of this branch consists of updates, additions and general churn of
the device tree source files in the kernel (arch/arm/boot/dts). Besides
that, there are a few things to point out:
- Lots of platform conversion on OMAP2+, with removal of old board files
for various platforms.
- Final conversion of a bunch of ux500 (ST-Ericsson) platforms as well
- Some updates to pinctrl and other subsystems. Most of these are for
DT-enablement of the various platforms and acks have been collected.
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Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC DT updates from Olof Johansson:
"Most of this branch consists of updates, additions and general churn
of the device tree source files in the kernel (arch/arm/boot/dts).
Besides that, there are a few things to point out:
- Lots of platform conversion on OMAP2+, with removal of old board
files for various platforms.
- Final conversion of a bunch of ux500 (ST-Ericsson) platforms as
well
- Some updates to pinctrl and other subsystems. Most of these are
for DT-enablement of the various platforms and acks have been
collected"
* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (385 commits)
ARM: dts: bcm11351: Use GIC/IRQ defines for sdio interrupts
ARM: dts: bcm: Add missing UARTs for bcm11351 (bcm281xx)
ARM: dts: bcm281xx: Add card detect GPIO
ARM: dts: rename ARCH_BCM to ARCH_BCM_MOBILE (dt)
ARM: bcm281xx: Add device node for the GPIO controller
ARM: mvebu: Add Netgear ReadyNAS 104 board
ARM: tegra: fix Tegra114 IOMMU register address
ARM: kirkwood: add support for OpenBlocks A7 platform
ARM: dts: omap4-panda: add DPI pinmuxing
ARM: dts: AM33xx: Add RNG node
ARM: dts: AM33XX: Add hwspinlock node
ARM: dts: OMAP5: Add hwspinlock node
ARM: dts: OMAP4: Add hwspinlock node
ARM: dts: use 'status' property for PCIe nodes
ARM: dts: sirf: add missed address-cells and size-cells for prima2 I2C
ARM: dts: sirf: add missed cell, cs and dma channel for SPI nodes
ARM: dts: sirf: add missed graphics2d iobg in atlas6 dts
ARM: dts: sirf: add missed chhifbg node in prima2 and atlas6 dts
ARM: dts: sirf: add missed memcontrol-monitor node in prima2 and atlas6 dts
ARM: mvebu: Add the core-divider clock to Armada 370/XP
...
This patch converts irq-bcm2835 driver to use the new IRQCHIP_DECLARE and
irqchip_init.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Stephen Warren <swarren@wwwdotorg.org>
Cc: Simon Arlott <simon@fire.lp0.eu>
Cc: Olof Johansson <olof@lixom.net>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit introduces the support for the MSI interrupts in the
armada-370-xp interrupt controller driver. It registers an MSI chip to
the MSI chip registry, which will be used by the Marvell PCIe host
controller driver.
The MSI interrupts use the 16 high doorbells, and are therefore
notified using IRQ1 of the main interrupt controller.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Instead of using of_iomap(), we now use of_address_to_resource(),
request_mem_region() and ioremap(). This allows the corresponding I/O
regions to be properly requested and visible in /proc/iomem.
The main motivation for this change is that the introduction of the
MSI support requires us to get the physical address of the main
interrupt controller registers, so we will need the corresponding
'struct resource' anyway.
We also take this opportunity to change a panic() to BUG_ON(), in
order to be consistent with the rest of the driver.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Daniel Price <daniel.price@gmail.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
The regular gic_raise_softirq() takes as input a CPU mask which is not
adequate when we need to send an IPI to a CPU which is not represented
in the kernel to GIC mapping. That is the case with the b.L switcher
when GIC migration to the inbound CPU has not yet occurred.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
In order to have early assembly code signal other CPUs in the system,
we need to get the physical address for the SGIR register used to
send IPIs. Because the register will be used with a precomputed CPU
interface ID number, there is no need for any locking in the assembly
code where this register is written to.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Nicolas Pitre writes:
This is the first part of the patch series adding IKS (In-Kernel
Switcher) support for big.LITTLE system architectures. This consists of
the core patches only. Extra patches to come later will introduce
various optimizations and tracing support.
Those patches were posted on the list a while ago here:
http://news.gmane.org/group/gmane.linux.ports.arm.kernel/thread=253942
This patch extends vic_of_init to parse valid interrupt sources
and resume sources masks from device tree.
If mask values are not specified in device tree, all sources
are assumed to be valid, as before this patch.
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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
...
This branch contains ARM SoC related driver updates for v3.12. The
only thing this cycle are core PM updates and CPUidle support for
ARM's TC2 big.LITTLE development platform.
Conflicts:
One cleanup/reorg conflict with a new entry in
drivers/cpuidle/Makefile. Append the new entry after the existing
ones. A follow up patch for v3.12-rc will make the new entry conform
to the cleanup/reorg.
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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 update from Kevin Hilman:
"This contains the ARM SoC related driver updates for v3.12. The only
thing this cycle are core PM updates and CPUidle support for ARM's TC2
big.LITTLE development platform"
* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
cpuidle: big.LITTLE: vexpress-TC2 CPU idle driver
ARM: vexpress: tc2: disable GIC CPU IF in tc2_pm_suspend
drivers: irq-chip: irq-gic: introduce gic_cpu_if_down()
- Device tree updates for TZ1090 GPIO drivers merged via GPIO tree.
- Add driver for ImgTec PDC irqchip as found in TZ1090 SoC.
- Add linux-metag mailing list to MAINTAINERS file.
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Merge tag 'metag-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull metag architecture changes from James Hogan:
- Device tree updates for TZ1090 GPIO drivers merged via GPIO tree.
- Add driver for ImgTec PDC irqchip as found in TZ1090 SoC.
- Add linux-metag mailing list to MAINTAINERS file.
* tag 'metag-for-v3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
irq-imgpdc: add ImgTec PDC irqchip driver
MAINTAINERS: add linux-metag mailing list
metag: tz1090: instantiate gpio-tz1090-pdc
metag: tz1090: select and instantiate gpio-tz1090
metag: tz1090: select and instantiate irq-imgpdc
This branch contains code cleanups, moves and removals for 3.12.
There's a large number of various cleanups, and a nice net removal of
13500 lines of code.
Highlights worth mentioning are:
- A series of patches from Stephen Boyd removing the ARM local timer API.
- Move of Qualcomm MSM IOMMU code to drivers/iommu.
- Samsung PWM driver cleanups from Tomasz Figa, removing legacy PWM driver
and switching over to the drivers/pwm one.
- Removal of some unusued auto-generated headers for OMAP2+ (PRM/CM).
There's also a move of a header file out of include/linux/i2c/ to
platform_data, where it really belongs. It touches mostly ARM platform
code for include changes so we took it through our tree.
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Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Olof Johansson:
"This branch contains code cleanups, moves and removals for 3.12.
There's a large number of various cleanups, and a nice net removal of
13500 lines of code.
Highlights worth mentioning are:
- A series of patches from Stephen Boyd removing the ARM local timer
API.
- Move of Qualcomm MSM IOMMU code to drivers/iommu.
- Samsung PWM driver cleanups from Tomasz Figa, removing legacy PWM
driver and switching over to the drivers/pwm one.
- Removal of some unusued auto-generated headers for OMAP2+ (PRM/CM).
There's also a move of a header file out of include/linux/i2c/ to
platform_data, where it really belongs. It touches mostly ARM
platform code for include changes so we took it through our tree"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (83 commits)
ARM: OMAP2+: Add back the define for AM33XX_RST_GLOBAL_WARM_SW_MASK
gpio: (gpio-pca953x) move header to linux/platform_data/
arm: zynq: hotplug: Remove unreachable code
ARM: SAMSUNG: Remove unnecessary exynos4_default_sdhci*()
tegra: simplify use of devm_ioremap_resource
ARM: SAMSUNG: Remove plat/regs-timer.h header
ARM: SAMSUNG: Remove remaining uses of plat/regs-timer.h header
ARM: SAMSUNG: Remove pwm-clock infrastructure
ARM: SAMSUNG: Remove old PWM timer platform devices
pwm: Remove superseded pwm-samsung-legacy driver
ARM: SAMSUNG: Modify board files to use new PWM platform device
ARM: SAMSUNG: Rework private data handling in dev-backlight
pwm: Add new pwm-samsung driver
ARM: mach-mvebu: remove redundant DT parsing and validation
ARM: msm: Only compile io.c on platforms that use it
iommu/msm: Move mach includes to iommu directory
ARM: msm: Remove devices-iommu.c
ARM: msm: Move mach/board.h contents to common.h
ARM: msm: Migrate msm_timer to CLOCKSOURCE_OF_DECLARE
ARM: msm: Remove TMR and TMR0 static mappings
...
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Merge tag 'mmp-irq' of git://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux into late/all
From Haojian Zhuang:
Move irq driver out of mach-mmp to support multiplatform
* tag 'mmp-irq' of git://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux:
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
the series of patches for irqdomain core in 3.11 has broken sirf
irq which uses legacy mapping. all users fail in the new kernel
while setupping irq.
this patch moves to linear irqdomain and drop old legacy irqdomain
codes since we don't need it any more, and at the same time, it
also fixes the broken interrupts of sirfsoc in 3.11.
on the other hand, we actually only have 64 interrupt sources for
prima2 and atlas6, but there are 128 interrupt souces for marco
which uses GIC. in the legacy codes, sirf gpio also uses legacy
irqdomain, so to make gpio interrupt mapping not depend on the
prima2/atlas6/marco an use unified marco,we enlarge prima2/atlas6
interrupt number to 128. here we don't need this workaround any
more as sirf gpio also moved to linear mode before. so we move
SIRFSOC_NUM_IRQS back to 64 too.
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
When processors are about to hit low power states, the assertion of
standbywfi signal, triggered by the wfi instruction, is essential to
entering low power modes. If an IRQ is pending on the processor at the
time wfi is issued, the wfi instruction completes and the processor
restarts execution without asserting the standbywfi signal. Depending
on the platform power controller HW this behaviour can be acceptable or
not; if this behaviour must be prevented software should be provided
with a way to disable the routing of interrupts to the core IRQ pins.
On systems where raw GIC distributor interrupts are connected to the power
controller as wake-up events (hence the power controller still senses
IRQs and can wake up cores upon IRQ pending), the GIC CPU interface can
be disabled on power down, so that the GIC CPU IF output is gated and wfi
cannot complete, thereby preventing the standbywfi issue.
This patch adds a simple function to the GIC driver that allows to
disable the GIC CPU IF from power down procedures.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[rewrote commit log]
Signed-off-by: Olof Johansson <olof@lixom.net>
pxa910_set_wake() & mmp2_set_wake() are both declared in head files
of arch/arm/mach-mmp/include/mach directory. If we include these
head files in irq-mmp driver, it blocks the multiplatform build.
So adjust the code.
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Support IRQCHIP & CONFIG_MULTI_IRQ_HANDLER in irq-mmp driver.
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Reviewed-by: Daniel Drake <dsd@laptop.org>
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
Currently, GIC IDs are hardcoded making the code dependent on the 4+4 b.L
configuration. Let's allow for GIC IDs to be discovered upon switcher
initialization to support other b.L configurations such as the 1+1 one,
or 2+3 as on the VExpress TC2.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
This is required by the big.LITTLE switcher code.
The gic_migrate_target() changes the CPU interface mapping for the
current CPU to redirect SGIs to the specified interface, and it also
updates the target CPU for each interrupts to that CPU interface
if they were targeting the current interface. Finally, pending
SGIs for the current CPU are forwarded to the new interface.
Because Linux does not use it, the SGI source information for the
forwarded SGIs is not preserved. Neither is the source information
for the SGIs sent by the current CPU to other CPUs adjusted to match
the new CPU interface mapping. The required registers are banked so
only the target CPU could do it.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
For EXYNOS SoCs, only can support for DT so removes non-DT stuff
in exynos-combiner.
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
The __cpuinit type of throwaway sections might have made sense
some time ago when RAM was more constrained, but now the savings
do not offset the cost and complications. For example, the fix in
commit 5e427ec2d0 ("x86: Fix bit corruption at CPU resume time")
is a good example of the nasty type of bugs that can be created
with improper use of the various __init prefixes.
After a discussion on LKML[1] it was decided that cpuinit should go
the way of devinit and be phased out. Once all the users are gone,
we can then finally remove the macros themselves from linux/init.h.
This removes all the drivers/clocksource and drivers/irqchip uses of
the __cpuinit macros from all C files.
[1] https://lkml.org/lkml/2013/5/20/589
Cc: John Stultz <john.stultz@linaro.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Pull irq updates from Thomas Gleixner:
- core fix for missing round up in the generic irq chip implementation
- new irq chip for MOXA SoCs
- a few fixes and cleanups in the irqchip drivers
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: Add support for MOXA ART SoCs
genirq: generic chip: Use DIV_ROUND_UP to calculate numchips
irqchip: nvic: Fix wrong num_ct argument for irq_alloc_domain_generic_chips()
irqchip: sun4i: Staticize sun4i_irq_ack()
irqchip: vt8500: Staticize local symbols
The third parameter of irq_alloc_domain_generic_chips() is the number of
irq_chip_type instances associated with these chips rather than numbanks.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Cc: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: kernel@pengutronix.de
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
sun4i_irq_ack() is only referenced in this file, so make it static.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: http://lkml.kernel.org/r/1373010070.14756.2.camel@phoenix
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This driver is converted to use IRQCHIP_DECLARE and irqchip_init.
vt8500_handle_irq() and vt8500_irq_init() are only referenced in this file, so
make them static.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Tony Prisk <linux@prisktech.co.nz>
Cc: Olof Johansson <olof@lixom.net>
Link: http://lkml.kernel.org/r/1372995229.4038.1.camel@phoenix
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull core irq changes from Ingo Molnar:
"The main changes:
- generic-irqchip driver additions, cleanups and fixes
- 3 new irqchip drivers: ARMv7-M NVIC, TB10x and Marvell Orion SoCs
- irq_get_trigger_type() simplification and cross-arch cleanup
- various cleanups, simplifications
- documentation updates"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits)
softirq: Use _RET_IP_
genirq: Add the generic chip to the genirq docbook
genirq: generic-chip: Export some irq_gc_ functions
genirq: Fix can_request_irq() for IRQs without an action
irqchip: exynos-combiner: Staticize combiner_init
irqchip: Add support for ARMv7-M NVIC
irqchip: Add TB10x interrupt controller driver
irqdomain: Use irq_get_trigger_type() to get IRQ flags
MIPS: octeon: Use irq_get_trigger_type() to get IRQ flags
arm: orion: Use irq_get_trigger_type() to get IRQ flags
mfd: stmpe: use irq_get_trigger_type() to get IRQ flags
mfd: twl4030-irq: Use irq_get_trigger_type() to get IRQ flags
gpio: mvebu: Use irq_get_trigger_type() to get IRQ flags
genirq: Add irq_get_trigger_type() to get IRQ flags
genirq: Irqchip: document gcflags arg of irq_alloc_domain_generic_chips
genirq: Set irq thread to RT priority on creation
irqchip: Add support for Marvell Orion SoCs
genirq: Add kerneldoc for irq_disable.
genirq: irqchip: Add mask to block out invalid irqs
genirq: Generic chip: Add linear irq domain support
...
These changes from 30 individual branches for the most part update device
tree files, but there are also a few source code changes that have crept
in this time, usually in order to atomically move over a driver from
using hardcoded data to DT probing.
A number of platforms change their DT files to use the C preprocessor,
which is causing a bit of churn, but that is hopefully only this once.
There are a few conflicts with the other branches unfortunately:
* in exynos5440.dtsi and kirkwood-6281.dtsi, device nodes are added
from multiple branches. Need to be careful to have the right
set of closing braces as git gets this one wrong.
* In kirkwood.dtsi, one 'ranges' line got split into two lines, while
another line got added. Order of the lines does not matter.
* in sama5d3.dtsi, some cleanup was merged the wrong way, causing
a bogus conflict. We want the 'dmas' and 'dma-names' properties
to get added here.
* Two lines got removed independently in arch/arm/mach-mxs/mach-mxs.c
* Contents get added independently in arch/arm/mach-omap2/cclock33xx_data.c
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Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree changes from Arnd Bergmann:
"These changes from 30 individual branches for the most part update
device tree files, but there are also a few source code changes that
have crept in this time, usually in order to atomically move over a
driver from using hardcoded data to DT probing.
A number of platforms change their DT files to use the C preprocessor,
which is causing a bit of churn, but that is hopefully only this once"
* tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (372 commits)
ARM: at91: dt: rm9200ek: add spi support
ARM: at91: dt: rm9200: add spi support
ARM: at91/DT: at91sam9n12: add SPI DMA client infos
ARM: at91/DT: sama5d3: add SPI DMA client infos
ARM: at91/DT: fix SPI compatibility string
ARM: Kirkwood: Fix the internal register ranges translation
ARM: dts: bcm281xx: change comment to C89 style
ARM: mmc: bcm281xx SDHCI driver (dt mods)
ARM: nomadik: add the new clocks to the device tree
clk: nomadik: implement the Nomadik clocks properly
ARM: dts: omap5-uevm: Provide USB Host PHY clock frequency
ARM: dts: omap4-panda: Fix DVI EDID reads
ARM: dts: omap4-panda: Add USB Host support
arm: mvebu: enable mini-PCIe connectors on Armada 370 RD
ARM: shmobile: irqpin: add a DT property to enable masking on parent
ARM: dts: AM43x EPOS EVM support
ARM: dts: OMAP5: Add bandgap DT entry
ARM: dts: AM33XX: Add pinmux configuration for CPSW to am335x EVM
ARM: dts: AM33XX: Add pinmux configuration for CPSW to EVMsk
ARM: dts: AM33XX: Add pinmux configuration for CPSW to beaglebone
...
These are various bug fixes that were not considered important enough
for merging into 3.10. The majority of the ARM fixes are for the OMAP
and at91 platforms, and there is another set of bug fixes for device
drivers that resolve 'randconfig' build errors and that the subsystem
maintainers either did not pick up or preferred to get merged through
the arm-soc tree.
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Merge tag 'fixes-non-critical-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC non-cricitical bug fixes from Arnd Bergmann:
"These are various bug fixes that were not considered important enough
for merging into 3.10.
The majority of the ARM fixes are for the OMAP and at91 platforms, and
there is another set of bug fixes for device drivers that resolve
'randconfig' build errors and that the subsystem maintainers either
did not pick up or preferred to get merged through the arm-soc tree."
* tag 'fixes-non-critical-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (43 commits)
ARM: at91/PMC: use at91_usb_rate() for UTMI PLL
ARM: at91/PMC: fix at91sam9n12 USB FS init
ARM: at91/PMC: at91sam9n12 family has a PLLB
ARM: at91/PMC: sama5d3 family doesn't have a PLLB
ARM: tegra: fix section mismatch in tegra_pmc_parse_dt
ARM: mxs: don't select HAVE_PWM
ARM: mxs: stub out mxs_pm_init for !CONFIG_PM
cpuidle: calxeda: select ARM_CPU_SUSPEND
ARM: mvebu: fix length of ethernet registers in mv78260 dtsi
ARM: at91: cpuidle: Fix target_residency
ARM: at91: fix at91_extern_irq usage for non-dt boards
ARM: sirf: use CONFIG_SIRF rather than CONFIG_PRIMA2 where necessary
clocksource: kona: adapt to CLOCKSOURCE_OF_DECLARE change
X.509: do not emit any informational output
mtd: omap2: allow bulding as a module
[SCSI] nsp32: use mdelay instead of large udelay constants
hwrng: bcm2835: fix MODULE_LICENSE tag
ARM: at91: Change the internal SRAM memory type MT_MEMORY_NONCACHED
ARM: at91: Fix link breakage when !CONFIG_PHYLIB
MAINTAINERS: Add exynos filename match to ARM/S5P EXYNOS ARM ARCHITECTURES
...
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>
These are two fixes that came in this week, one for a regression we
introduced in 3.10 in the GIC interrupt code, and the other one
fixes a typo in newly introduced code.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"These are two fixes that came in this week, one for a regression we
introduced in 3.10 in the GIC interrupt code, and the other one fixes
a typo in newly introduced code"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
irqchip: gic: call gic_cpu_init() as well in CPU_STARTING_FROZEN case
ARM: dts: Correct the base address of pinctrl_3 on Exynos5250
* Increased DT coverage for renesas-intc-irqpin
by Guennadi Liakhovetski
* Clean up of address format used in sh73a0 dtsi file
by Guennadi Liakhovetski
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Merge tag 'renesas-dt2-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/dt
From Simon Horman:
Second Round of Renesas ARM-based SoC DT updates for v3.11
* Increased DT coverage for renesas-intc-irqpin
by Guennadi Liakhovetski
* Clean up of address format used in sh73a0 dtsi file
by Guennadi Liakhovetski
* tag 'renesas-dt2-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: irqpin: add a DT property to enable masking on parent
ARM: shmobile: sh73a0: remove "0x" prefix from DT node names
irqchip: renesas-intc-irqpin: DT binding for sense bitfield width
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
