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None of the chips has a ACK register. The code brainlessly fiddles
with the enable register, so it might even reenable a disabled
interrupt at least on spear300.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.570396433@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Calculate the status mask at compile time, not at runtime.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.496614337@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
No point in doing a full irq lookup, when the desc pointer is
available.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.404243909@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Order the ras blocks in the order of interrupts not alphabetically.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.310591579@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
The struct members of the shirq block struct are named to confuse the
hell out of the casual reader. Clean it up.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.219411832@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
The struct member is pointless and a nismomer as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.129694036@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
No point in having them in a separate header file. Make the init
functions static.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212713.038658058@linutronix.de
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
The ras3 block on spear320 claims to have 3 interrupts. In fact it has
one and 6 reserved interrupts. Account the 6 reserved to this block so
it has 7 interrupts total. That matches the datasheet and the device
tree entries.
Broken since commit 80515a5a(ARM: SPEAr3xx: shirq: simplify and move
the shared irq multiplexor to DT). Testing is overrated....
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20140619212712.872379208@linutronix.de
Fixes: 80515a5a2e ('ARM: SPEAr3xx: shirq: simplify and move the shared irq multiplexor to DT')
Cc: <stable@vger.kernel.org> # v3.8+
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Using the generic function saves looking up this custom one in a source
navigator.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lkml.kernel.org/r/1401894112-13386-1-git-send-email-daniel.thompson@linaro.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
The driver was configuring the interrupt handler for the Level-2
interrupts to be "level" triggered while they are in fact "edge"
triggered. Fix this by using the correct handler.
Reported-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lkml.kernel.org/r/1402337102-19428-1-git-send-email-f.fainelli@gmail.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Until now, the irq-armada-370-xp irqchip driver was not masking all
interrupts at initialization. While in most cases this is not a
problem because the bootloader has probably masked all interrupts, it
becomes a problem when you use kexec: you're in kernel A, with many
interrupts enabled, and then kexec into kernel B, without going
through the bootloader. So during the boot process, if an interrupt
occurs while the corresponding driver has not been loaded, you would
get spurious interrupts.
This commit fixes that by ensuring all interrupts are properly masked
when the irqchip driver is initialized. Note that interrupt masking
takes place at two level: at the global level (main_int_base) and at
the per-CPU level (per_cpu_int_base).
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1401481098-23326-6-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Pull core irq updates from Thomas Gleixner:
"The irq department delivers:
- Another tree wide update to get rid of the horrible create_irq
interface along with its even more horrible variants. That also
gets rid of the last leftovers of the initial sparse irq hackery.
arch/driver specific changes have been either acked or ignored.
- A fix for the spurious interrupt detection logic with threaded
interrupts.
- A new ARM SoC interrupt controller
- The usual pile of fixes and improvements all over the place"
* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
Documentation: brcmstb-l2: Add Broadcom STB Level-2 interrupt controller binding
irqchip: brcmstb-l2: Add Broadcom Set Top Box Level-2 interrupt controller
genirq: Improve documentation to match current implementation
ARM: iop13xx: fix msi support with sparse IRQ
genirq: Provide !SMP stub for irq_set_affinity_notifier()
irqchip: armada-370-xp: Move the devicetree binding documentation
irqchip: gic: Use mask field in GICC_IAR
genirq: Remove dynamic_irq mess
ia64: Use irq_init_desc
genirq: Replace dynamic_irq_init/cleanup
genirq: Remove irq_reserve_irq[s]
genirq: Replace reserve_irqs in core code
s390: Avoid call to irq_reserve_irqs()
s390: Remove pointless arch_show_interrupts()
s390: pci: Check return value of alloc_irq_desc() proper
sh: intc: Remove pointless irq_reserve_irqs() invocation
x86, irq: Remove pointless irq_reserve_irqs() call
genirq: Make create/destroy_irq() ia64 private
tile: Use SPARSE_IRQ
tile: pci: Use irq_alloc/free_hwirq()
...
- Another round of clean-up of FDT related code in architecture code.
This removes knowledge of internal FDT details from most architectures
except powerpc.
- Conversion of kernel's custom FDT parsing code to use libfdt.
- DT based initialization for generic serial earlycon. The introduction
of generic serial earlycon support went in thru tty tree.
- Improve the platform device naming for DT probed devices to ensure
unique naming and use parent names instead of a global index.
- Fix a race condition in of_update_property.
- Unify the various linker section OF match tables and fix several
function prototype errors.
- Update platform_get_irq_byname to work in deferred probe cases.
- 2 binding doc updates
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Merge tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next
Pull DeviceTree updates from Rob Herring:
- Another round of clean-up of FDT related code in architecture code.
This removes knowledge of internal FDT details from most
architectures except powerpc.
- Conversion of kernel's custom FDT parsing code to use libfdt.
- DT based initialization for generic serial earlycon. The
introduction of generic serial earlycon support went in through the
tty tree.
- Improve the platform device naming for DT probed devices to ensure
unique naming and use parent names instead of a global index.
- Fix a race condition in of_update_property.
- Unify the various linker section OF match tables and fix several
function prototype errors.
- Update platform_get_irq_byname to work in deferred probe cases.
- 2 binding doc updates
* tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits)
of: handle NULL node in next_child iterators
of/irq: provide more wrappers for !CONFIG_OF
devicetree: bindings: Document micrel vendor prefix
dt: bindings: dwc2: fix required value for the phy-names property
of_pci_irq: kill useless variable in of_irq_parse_pci()
of/irq: do irq resolution in platform_get_irq_byname()
of: Add a testcase for of_find_node_by_path()
of: Make of_find_node_by_path() handle /aliases
of: Create unlocked version of for_each_child_of_node()
lib: add glibc style strchrnul() variant
of: Handle memory@0 node on PPC32 only
pci/of: Remove dead code
of: fix race between search and remove in of_update_property()
of: Use NULL for pointers
of: Stop naming platform_device using dcr address
of: Ensure unique names without sacrificing determinism
tty/serial: pl011: add DT based earlycon support
of/fdt: add FDT serial scanning for earlycon
of/fdt: add FDT address translation support
serial: earlycon: add DT support
...
A quite large set of SoC updates this cycle. In no particular order:
- Multi-cluster power management for Samsung Exynos, adding support for
big.LITTLE CPU switching on EXYNOS5
- SMP support for Marvell Armada 375 and 38x
- SMP rework on Allwinner A31
- Xilinx Zynq support for SOC_BUS, big endian
- Marvell orion5x platform cleanup, modernizing the implementation and
moving to DT.
- _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
that their platform can be enabled in the same kernel binary as most
of the other v7 platforms in the tree. \o/ The work isn't quite complete,
there's some driver fixes still needed, but the basics now work.
New SoC support added:
- Freescale i.MX6SX
- LSI Axxia AXM55xx SoCs
- Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800
- STi STIH407
Plus a large set of various smaller updates for different platforms. I'm
probably missing some important one here.
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Merge tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc into next
Pull part one of ARM SoC updates from Olof Johansson:
"A quite large set of SoC updates this cycle. In no particular order:
- Multi-cluster power management for Samsung Exynos, adding support
for big.LITTLE CPU switching on EXYNOS5
- SMP support for Marvell Armada 375 and 38x
- SMP rework on Allwinner A31
- Xilinx Zynq support for SOC_BUS, big endian
- Marvell orion5x platform cleanup, modernizing the implementation
and moving to DT.
- _Finally_ moving Samsung Exynos over to support MULTIPLATFORM, so
that their platform can be enabled in the same kernel binary as
most of the other v7 platforms in the tree. \o/
The work isn't quite complete, there's some driver fixes still
needed, but the basics now work.
New SoC support added:
- Freescale i.MX6SX
- LSI Axxia AXM55xx SoCs
- Samsung EXYNOS 3250, 5260, 5410, 5420 and 5800
- STi STIH407
plus a large set of various smaller updates for different platforms.
I'm probably missing some important one here"
* tag 'soc-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (281 commits)
ARM: exynos: don't run exynos4 l2x0 setup on other platforms
ARM: exynos: Fix "allmodconfig" build errors in mcpm and hotplug
ARM: EXYNOS: mcpm rename the power_down_finish
ARM: EXYNOS: Enable mcpm for dual-cluster exynos5800 SoC
ARM: EXYNOS: Enable multi-platform build support
ARM: EXYNOS: Consolidate Kconfig entries
ARM: EXYNOS: Add support for EXYNOS5410 SoC
ARM: EXYNOS: Support secondary CPU boot of Exynos3250
ARM: EXYNOS: Add Exynos3250 SoC ID
ARM: EXYNOS: Add 5800 SoC support
ARM: EXYNOS: initial board support for exynos5260 SoC
clk: exynos5410: register clocks using common clock framework
ARM: debug: qcom: add UART addresses to Kconfig help for APQ8084
ARM: sunxi: allow building without reset controller
Documentation: devicetree: arm: sort enable-method entries
ARM: rockchip: convert smp bringup to CPU_METHOD_OF_DECLARE
clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks
ARM: dts: axxia: Add reset controller
power: reset: Add Axxia system reset driver
ARM: axxia: Adding defconfig for AXM55xx
...
- irq-gic
- use a mask field
- irq-armada-370-xp
- move the DT binding docs to the irqchip directory
- irq-brcmstb-l2
- new driver for Broadcom Set Top Box Level-2
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Merge tag 'irqchip-3.16' of git://git.infradead.org/users/jcooper/linux into irq/core
irqchip core changes for v3.16 collected by Jason Cooper:
- irq-gic: Use a mask field
- irq-armada-370-xp: Move the DT binding docs to the irqchip directory
- irq-brcmstb-l2: New driver for Broadcom Set Top Box Level-2
This patch adds support for the Level-2 interrupt controller hardware
found in Broadcom Set Top Box System-on-a-Chip devices. This interrupt
controller is implemented using the generic IRQ chip driver with
separate enable and disable registers.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Link: https://lkml.kernel.org/r/1400892054-24457-2-git-send-email-f.fainelli@gmail.com
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This series reworks VE's platform configuration infrastructure by:
- making it possible to instantiate selected devices from the
Device Tree, prior to massive population,
- converting custom "func" API into standard "regmap",
- splitting the existing MFD driver into smaller ones and placing
them into relevant directories.
The common clock framework driver can now be selected individually
(mostly for arm64 sake, where some of them are not used at all).
It also simplifies the machine code, by:
- moving the shed clock info clocksource driver,
- simplifying SMP operations to base them entirely of the DT data,
- moving platform ID checks into relevant driver.
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Merge tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux into next/cleanup
Merge "ARM Versatile Express updates for 3.16" from Pawel Moll:
This series reworks VE's platform configuration infrastructure by:
- making it possible to instantiate selected devices from the
Device Tree, prior to massive population,
- converting custom "func" API into standard "regmap",
- splitting the existing MFD driver into smaller ones and placing
them into relevant directories.
The common clock framework driver can now be selected individually
(mostly for arm64 sake, where some of them are not used at all).
It also simplifies the machine code, by:
- moving the shed clock info clocksource driver,
- simplifying SMP operations to base them entirely of the DT data,
- moving platform ID checks into relevant driver.
* tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux:
ARM: vexpress: move HBI check to sysreg driver
ARM: vexpress: Simplify SMP operations for DT-powered system
ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count
clocksource: Sched clock source for Versatile Express
clk: versatile: Split config options for sp810 and vexpress_osc
mfd: vexpress: Define the device as MFD cells
mfd: syscon: Add platform data with a regmap config name
mfd: vexpress: Convert custom func API to regmap
of: Keep track of populated platform devices
+ Linux 3.15-rc5
Signed-off-by: Olof Johansson <olof@lixom.net>
We now have several OF match tables using linker sections that are
nearly the same definition. The only variation is the callback function
prototype. Create a common define for creating linker section OF match
table entries which each table declaration can use.
Acked-by: Grant Likely <grant.likely@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Adding function type checking to IRQCHIP_OF_DECLARE found a type mismatch
with icoll_of_init. The function should return an error code or 0 on
success.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Adding function type checking to IRQCHIP_OF_DECLARE found a type mismatch
with s3c2410_init_intc_of and s3c2416_init_intc_of. The function only takes
the 1st 2 parameters.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Make the irqchip OF match table section naming aligned with other
OF match table sections in preparation to have a common definition.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Herring <robh@kernel.org>
- Armada 375/38x coherency support
- Armada 375/38x SMP support
- mvebu PMSU and CPU reset support
- Armada 370/XP cpuidle support
- kirkwood remove platform init of audio device
- small fixes and cleanup for new SoC (375/38x)
Note:
- due to complex deps, cpuidle changes Acked by appropriate maintainer for
going though arm-soc tree.
Depends:
- tags/irqchip-mvebu-3.16 in the mvebu/irqchip branch (tglx already pulled) for:
d7df84b3ce irqchip: irq-armada-370-xp: Use cpu notifier to initialize secondary CPUs
ef37d337e1 irqchip: irq-armada-370-xp: Do the set_smp_cross_call() in the driver
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Merge tag 'mvebu-soc-3.16' of git://git.infradead.org/linux-mvebu into next/soc
Merge "ARM: mvebu: SoC changes for v3.16" from Jason Cooper:
mvebu SoC changes for v3.16
- Armada 375/38x coherency support
- Armada 375/38x SMP support
- mvebu PMSU and CPU reset support
- Armada 370/XP cpuidle support
- kirkwood remove platform init of audio device
- small fixes and cleanup for new SoC (375/38x)
Note:
- due to complex deps, cpuidle changes Acked by appropriate maintainer for
going though arm-soc tree.
* tag 'mvebu-soc-3.16' of git://git.infradead.org/linux-mvebu: (46 commits)
ARM: mvebu: Fix pmsu compilation when ARMv6 is selected
ARM: mvebu: conditionalize Armada 375 coherency workaround
ARM: mvebu: conditionalize Armada 375 SMP workaround
ARM: mvebu: add Armada 375 A0 revision definition
ARM: mvebu: initialize mvebu-soc-id earlier
ARM: mvebu: fix thermal quirk SoC revision check
ARM: Kirkwood: t5325: Remove platform device to instantiate audio
ARM: Kirkwood: Remove platform driver for codec
ARM: mvebu: Add thermal quirk for the Armada 375 DB board
ARM: mvebu: Select HAVE_ARM_TWD only if SMP is enabled
ARM: mvebu: fix the name of the parameter used in mvebu_get_soc_id
ARM: mvebu: remove unnecessary ifdef around l2x0_of_init
ARM: mvebu: register the cpuidle driver for the Armada XP SoCs
cpuidle: mvebu: Add initial CPU idle support for Armada 370/XP SoC
ARM: mvebu: Register notifier callback for the cpuidle transition
ARM: mvebu: refine which files are build in mach-mvebu
ARM: mvebu: Add the PMSU related part of the cpu idle functions
ARM: mvebu: Allow to power down L2 cache controller in idle mode
ARM: mvebu: Low level function to disable HW coherency support
ARM: mvebu: Split low level functions to manipulate HW coherency
...
Signed-off-by: Olof Johansson <olof@lixom.net>
Bit[9:0] is interrupt ID field in GICC_IAR. Bit[12:10] is CPU ID field,
and others are reserved.
So we should use GICC_IAR_INT_ID_MASK to get interrupt ID. It's not a good way
to use ~0x1c00 (CPU ID field) to get interrupt ID.
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Link: https://lkml.kernel.org/r/1399795571-17231-3-git-send-email-haojian.zhuang@linaro.org
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
fix "line line over 80 characters" for the below:
static int __init sirfsoc_irq_init(struct device_node *np, struct device_node *parent)
the users of the codes - key customers really care about that.
Signed-off-by: Bin Shi <Bin.Shi@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
- orion
- reverse irq handling priority
- armada-370-xp
- do set_smp_cross_call in the driver
- use cpu notifier to init secondary cpus
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Merge tag 'irqchip-mvebu-3.16' of git://git.infradead.org/linux-mvebu into irq/core
irqchip mvebu changes for v3.16 from Jason Cooper:
* orion: reverse irq handling priority
* armada-370-xp: do set_smp_cross_call in the driver
* armada-370-xp use cpu notifier to init secondary cpus
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Non-DT irq handlers were working through irq causes from most-significant
to least-significant bit, while DT irqchip driver does it the other way
round. This revealed some more HW issues on Kirkwood peripheral IP, where
spurious sdio irqs can happen although irqs are masked.
Also, the generated binaries show that original non-DT order compared
to DT order save two instructions for each bit count check:
irqchip DT order with ffs():
60: e3a06001 mov r6, #1
64: e2643000 rsb r3, r4, #0
68: e0033004 and r3, r3, r4
6c: e16f3f13 clz r3, r3
70: e263301f rsb r3, r3, #31
74: e1c44316 bic r4, r4, r6, lsl r3
78: e5971004 ldr r1, [r7, #4]
Original non-DT order with fls():
60: e3a07001 mov r7, #1
64: e16f3f14 clz r3, r4
68: e263301f rsb r3, r3, #31
6c: e1c44317 bic r4, r4, r7, lsl r3
70: e5951004 ldr r1, [r5, #4]
Therefore, reverse irq bit handling back to original order by replacing
ffs() with fls().
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1398719528-23607-1-git-send-email-sebastian.hesselbarth@gmail.com
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Some irqchip initialization must be done on secondary CPUs. On mvebu
platforms, this is currently achieved by having the
arch/arm/mach-mvebu/platsmp.c code directly call into a function
exported by the irqchip driver, which isn't really nice.
This commit changes this by using the same solution as the one used in
the GIC driver: the irqchip driver registers a CPU notifier, which is
used to do the secondary CPU IRQ initialization. This way, the irqchip
driver is completely autonomous, and the function no longer needs to
be exposed from the irqchip driver to the SoC code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397483648-26611-6-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Instead of having the SoC code in arch/arm/mach-mvebu/platsmp.c do the
set_smp_cross_call() to register the IPI-triggering function, it makes
more sense to do exactly what the GIC driver is doing: let the irqchip
driver do it. This way, it avoids having to expose the
armada_mpic_send_doorbell() function between the irqchip driver and
the SoC code.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397483648-26611-5-git-send-email-thomas.petazzoni@free-electrons.com
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
We are allocating the size of a pointer and not the size of the data.
This will lead to memory corruption.
There isn't actually a "cb_device" struct, btw. The code is only able
to compile because GCC knows that all pointers are the same size.
Fixes: 96ca848ef7 ('DRIVERS: IRQCHIP: CROSSBAR: Add support for Crossbar IP')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sricharan R <r.sricharan@ti.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Link: http://lkml.kernel.org/r/20140403072134.GA14286@mwanda
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The set_irq_affinity() function has two issues:
1) It has no protection against selecting an offline cpu from the
given mask.
2) It pointlessly restricts the affinity masks to have a single cpu
set. This collides with the irq migration code of arm.
irq affinity is set to core 3
core 3 goes offline
migration code sets mask to cpu_online_mask and calls the
irq_set_affinity() callback of the irq_chip which fails due to bit
0,1,2 set.
So instead of doing silly for_each_cpu() loops just pick any bit of
the mask which intersects with the online mask.
Get rid of fiddling with the default_irq_affinity as well.
[ Gregory: Fixed the access to the routing register ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>
Link: http://lkml.kernel.org/r/20140304203101.088889302@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Pull irq fixes from Thomas Gleixner:
"A slighlty large fix for a subtle issue in the CPU hotplug code of
certain ARM SoCs, where the not yet online cpu needs to setup the cpu
local timer and needs to set the interrupt affinity to itself.
Setting interrupt affinity to a not online cpu is prohibited and
therefor the timer interrupt ends up on the wrong cpu, which leads to
nasty complications.
The SoC folks tried to hack around that in the SoC code in some more
than nasty ways. The proper solution is to have a way to enforce the
affinity setting to a not online cpu. The core patch to the genirq
code provides that facility and the follow up patches make use of it
in the GIC interrupt controller and the exynos timer driver.
The change to the core code has no implications to existing users,
except for the rename of the locked function and therefor the
necessary fixup in mips/cavium. Aside of that, no runtime impact is
possible, as none of the existing interrupt chips implements anything
which depends on the force argument of the irq_set_affinity()
callback"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource: Exynos_mct: Register clock event after request_irq()
clocksource: Exynos_mct: Use irq_force_affinity() in cpu bringup
irqchip: Gic: Support forced affinity setting
genirq: Allow forcing cpu affinity of interrupts
Until now, we were leaving the ->check_device() msi_chip operation
empty, which leads the PCI core to believe that we support both MSI
and MSI-X. In fact, we do not support MSI-X, so we have to tell this
to the PCI core by providing an implementation of this operation.
Fixes: 31f614edb7 ('irqchip: armada-370-xp: implement MSI support')
Cc: <stable@vger.kernel.org> # v3.13+
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397823593-1932-3-git-send-email-thomas.petazzoni@free-electrons.com
Tested-by: Neil Greatorex <neil@fatboyfat.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
The armada_370_xp_alloc_msi() function returns a signed int, which is
negative on error. However, we store the return value into an
irq_hw_number_t, which is unsigned. Therefore, we actually never test
if armada_370_xp_alloc_msi() returns an error or not, which may lead
us to use hwirq numbers of as 0xffffffe4 (when
armada_370_xp_alloc_msi() returns -ENOSPC).
This commit fixes that by storing the return value of
armada_370_xp_alloc_msi() in a signed variable.
Fixes: 31f614edb7 ('irqchip: armada-370-xp: implement MSI support')
Cc: <stable@vger.kernel.org> # v3.13+
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Link: https://lkml.kernel.org/r/1397823593-1932-2-git-send-email-thomas.petazzoni@free-electrons.com
Tested-by: Neil Greatorex <neil@fatboyfat.co.uk>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
shiraz.hashim@st.com email-id doesn't exist anymore as he has left the
company. Replace ST's id with shiraz.linux.kernel@gmail.com.
It also updates .mailmap file to fix address for 'git shortlog'.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
To support the affinity setting of per cpu timers in the early startup
of a not yet online cpu, implement the force logic, which disables the
cpu online check.
Tagged for stable to allow a simple fix of the affected SoC clock
event drivers.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Tomasz Figa <t.figa@samsung.com>,
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>,
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org,
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20140416143315.916984416@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
We are flagging the parent IRQ as chained, then we must also
make sure to call the chained_irq_[enter|exit] functions for
things to work smoothly.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: http://lkml.kernel.org/r/1397550484-7119-1-git-send-email-linus.walleij@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
These changes are mostly for ARM specific device drivers that either
don't have an upstream maintainer, or that had the maintainer ask
us to pick up the changes to avoid conflicts. A large chunk of this
are clock drivers (bcm281xx, exynos, versatile, shmobile), aside from
that, reset controllers for STi as well as a large rework of the
Marvell Orion/EBU watchdog driver are notable.
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Merge tag 'drivers-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver changes from Arnd Bergmann:
"These changes are mostly for ARM specific device drivers that either
don't have an upstream maintainer, or that had the maintainer ask us
to pick up the changes to avoid conflicts.
A large chunk of this are clock drivers (bcm281xx, exynos, versatile,
shmobile), aside from that, reset controllers for STi as well as a
large rework of the Marvell Orion/EBU watchdog driver are notable"
* tag 'drivers-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (99 commits)
Revert "dts: socfpga: Add DTS entry for adding the stmmac glue layer for stmmac."
Revert "net: stmmac: Add SOCFPGA glue driver"
ARM: shmobile: r8a7791: Fix SCIFA3-5 clocks
ARM: STi: Add reset controller support to mach-sti Kconfig
drivers: reset: stih416: add softreset controller
drivers: reset: stih415: add softreset controller
drivers: reset: Reset controller driver for STiH416
drivers: reset: Reset controller driver for STiH415
drivers: reset: STi SoC system configuration reset controller support
dts: socfpga: Add sysmgr node so the gmac can use to reference
dts: socfpga: Add support for SD/MMC on the SOCFPGA platform
reset: Add optional resets and stubs
ARM: shmobile: r7s72100: fix bus clock calculation
Power: Reset: Generalize qnap-poweroff to work on Synology devices.
dts: socfpga: Update clock entry to support multiple parents
ARM: socfpga: Update socfpga_defconfig
dts: socfpga: Add DTS entry for adding the stmmac glue layer for stmmac.
net: stmmac: Add SOCFPGA glue driver
watchdog: orion_wdt: Use %pa to print 'phys_addr_t'
drivers: cci: Export CCI PMU revision
...
Lots of changes specific to one of the SoC families. Some that
stick out are:
* mach-qcom gains new features, most importantly SMP support for
the newer chips (Stephen Boyd, Rohit Vaswani)
* mvebu gains support for three new SoCs: Armada 375, 380 and 385
(Thomas Petazzoni and Free-electrons team)
* SMP support for Rockchips (Heiko Stübner)
* Lots of i.MX changes (Shawn Guo)
* Added support for BCM5301x SoC (Hauke Mehrtens)
* Multiplatform support for Marvell Kirkwood and Dove
(Andrew Lunn and Sebastian Hesselbarth doing the final part
of a long journey)
* Unify davinci platforms and remove obsolete ones (Sekhar Nori,
Arnd Bergmann)
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Merge tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC specific changes from Arnd Bergmann:
"Lots of changes specific to one of the SoC families. Some that stick
out are:
- mach-qcom gains new features, most importantly SMP support for the
newer chips (Stephen Boyd, Rohit Vaswani)
- mvebu gains support for three new SoCs: Armada 375, 380 and 385
(Thomas Petazzoni and Free-electrons team)
- SMP support for Rockchips (Heiko Stübner)
- Lots of i.MX changes (Shawn Guo)
- Added support for BCM5301x SoC (Hauke Mehrtens)
- Multiplatform support for Marvell Kirkwood and Dove (Andrew Lunn
and Sebastian Hesselbarth doing the final part of a long journey)
- Unify davinci platforms and remove obsolete ones (Sekhar Nori, Arnd
Bergmann)"
* tag 'soc-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (126 commits)
ARM: sunxi: Select HAVE_ARM_ARCH_TIMER
ARM: cache-tauros2: remove ARMv6 code
ARM: mvebu: don't select CONFIG_NEON
ARM: davinci: fix DT booting with default defconfig
ARM: configs: bcm_defconfig: enable bcm590xx regulator support
ARM: davinci: remove tnetv107x support
MAINTAINERS: Update ARM STi maintainers
ARM: restrict BCM_KONA_UART to ARCH_BCM_MOBILE
ARM: bcm21664: Add board support.
ARM: sunxi: Add the new watchog compatibles to the reboot code
ARM: enable ARM_HAS_SG_CHAIN for multiplatform
ARM: davinci: remove da8xx_omapl_defconfig
ARM: davinci: da8xx: fix multiple watchdog device registration
ARM: davinci: add da8xx specific configs to davinci_all_defconfig
ARM: davinci: enable da8xx build concurrently with older devices
ARM: BCM5301X: workaround suppress fault
ARM: BCM5301X: add early debugging support
ARM: BCM5301X: initial support for the BCM5301X/BCM470X SoCs with ARM CPU
ARM: mach-bcm: Remove GENERIC_TIME
ARM: shmobile: APMU: Fix warnings due to improper printk formats
...
These cleanup patches are mainly move stuff around and should all
be harmless. They are mainly split out so that other branches can
be based on top to avoid conflicts.
Notable changes are:
* We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
longer used. (Uwe Kleine-König)
* The Qualcomm MSM platform is split out into legacy mach-msm and
new-style mach-qcom, to allow easier maintainance of the new
hardware support without regressions. (Kumar Gala)
* A rework of some of the Kconfig logic to simplify multiplatform
support (Rob Herring)
* Samsung Exynos gets closer to supporting multiplatform (Sachin
Kamat and others)
* mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
* at91 gains some common clock framework support (Alexandre Belloni,
Jean-Jacques Hiblot and other French people).
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Merge tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Arnd Bergmann:
"These cleanup patches are mainly move stuff around and should all be
harmless. They are mainly split out so that other branches can be
based on top to avoid conflicts.
Notable changes are:
- We finally remove all mach/timex.h, after CLOCK_TICK_RATE is no
longer used (Uwe Kleine-König)
- The Qualcomm MSM platform is split out into legacy mach-msm and
new-style mach-qcom, to allow easier maintainance of the new
hardware support without regressions (Kumar Gala)
- A rework of some of the Kconfig logic to simplify multiplatform
support (Rob Herring)
- Samsung Exynos gets closer to supporting multiplatform (Sachin
Kamat and others)
- mach-bcm3528 gets merged into mach-bcm (Stephen Warren)
- at91 gains some common clock framework support (Alexandre Belloni,
Jean-Jacques Hiblot and other French people)"
* tag 'cleanup-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (89 commits)
ARM: hisi: select HAVE_ARM_SCU only for SMP
ARM: efm32: allow uncompress debug output
ARM: prima2: build reset code standalone
ARM: at91: add PWM clock
ARM: at91: move sam9261 SoC to common clk
ARM: at91: prepare common clk transition for sam9261 SoC
ARM: at91: updated the at91_dt_defconfig with support for the ADS7846
ARM: at91: dt: sam9261: Device Tree support for the at91sam9261ek
ARM: at91: dt: defconfig: Added the sam9261 to the list of DT-enabled SOCs
ARM: at91: dt: Add at91sam9261 dt SoC support
ARM: at91: switch sam9rl to common clock framework
ARM: at91/dt: define main clk frequency of at91sam9rlek
ARM: at91/dt: define at91sam9rl clocks
ARM: at91: prepare common clk transition for sam9rl SoCs
ARM: at91: prepare sam9 dt boards transition to common clk
ARM: at91: dt: sam9rl: Device Tree for the at91sam9rlek
ARM: at91/defconfig: Add the sam9rl to the list of DT-enabled SOCs
ARM: at91: Add at91sam9rl DT SoC support
ARM: at91: prepare at91sam9rl DT transition
ARM: at91/defconfig: refresh at91sam9260_9g20_defconfig
...
Lots of isolated bug fixes that were not found to be important
enough to be submitted before the merge window or backported
into stable kernels.
The vast majority of these came out of Arnd's randconfig testing
and just prevents running into build-time bugs in configurations
that we do not care about in practice.
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Merge tag 'fixes-non-critical-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC non-critical bug fixes from Arnd Bergmann:
"Lots of isolated bug fixes that were not found to be important enough
to be submitted before the merge window or backported into stable
kernels.
The vast majority of these came out of Arnd's randconfig testing and
just prevents running into build-time bugs in configurations that we
do not care about in practice"
* tag 'fixes-non-critical-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (75 commits)
ARM: at91: fix a typo
ARM: moxart: fix CPU selection
ARM: tegra: fix board DT pinmux setup
ARM: nspire: Fix compiler warning
IXP4xx: Fix DMA masks.
Revert "ARM: ixp4xx: Make dma_set_coherent_mask common, correct implementation"
IXP4xx: Fix Goramo Multilink GPIO conversion.
Revert "ARM: ixp4xx: fix gpio rework"
ARM: tegra: make debug_ll code build for ARMv6
ARM: sunxi: fix build for THUMB2_KERNEL
ARM: exynos: add missing include of linux/module.h
ARM: exynos: fix l2x0 saved regs handling
ARM: samsung: select CRC32 for SAMSUNG_PM_CHECK
ARM: samsung: select ATAGS where necessary
ARM: samsung: fix SAMSUNG_PM_DEBUG Kconfig logic
ARM: samsung: allow serial driver to be disabled
ARM: s5pv210: enable IDE support in MACH_TORBRECK
ARM: s5p64x0: fix building with only one soc type
ARM: s3c64xx: select power domains only when used
ARM: s3c64xx: MACH_SMDK6400 needs HSMMC1
...
Now that we only ack irq 0 the code can be simplified a lot.
Also switch from read / modify / write to a simple write clear:
1) This is what the android code does (it has a hack for acking irq 0
in its unmask code doing this)
2) read / modify / write simply does not make sense for an irq status
register like this, if the other bits are writeable (and the data sheet says
they are not) they should be write 1 to clear, since otherwise a read /
modify / write can race with a device raising an interrupt and then clear
the pending bit unintentionally
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@googlegroups.com
Link: http://lkml.kernel.org/r/1394895894-8891-3-git-send-email-hdegoede@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Since the sun4i irq chip does not require any action and clears the interrupt
when the level goes back to inactive, we don't need to mask / unmask for
non oneshot IRQs, to achieve this we make sun4i_irq_ack a nop for all irqs
except irq 0 and use handle_fasteoi_irq for all interrupts.
Now there might be a case when the device reactivates the interrupt
before the RETI. But that does not matter as we run the primary
interrupt handlers with interrupts disabled.
This also allows us to get rid of needing to use 2 irq_chip structs, this
means that the IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED will now influence
all interrupts rather then just irq 0, but that does not matter as the eoi
is now a nop anyways for all interrupts but irq 0.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@googlegroups.com
Link: http://lkml.kernel.org/r/1394895894-8891-2-git-send-email-hdegoede@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Merge tag 'omap-for-v3.15/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/fixes-non-critical
Merge "omap fixes for v3.15 merge window" from Tony Lindgren:
Fixes for omaps that would be good to get in before v3.15-rc1.
* tag 'omap-for-v3.15/fixes-for-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP4: hwmod data: correct the idlemodes for spinlock
ARM: dts: am33xx: correcting dt node unit address for usb
ARM: dts: omap4/5: Use l3_ick for the gpmc node
CLK: TI: OMAP4/5/DRA7: Remove gpmc_fck from dummy clocks
ARM: OMAP4: Fix definition of IS_PM44XX_ERRATUM
ARM: OMAP2+: INTC: Acknowledge stuck active interrupts
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
All IRQs except for IRQ 0 seem to not need acking, so drop acking for them.
The ENMI needs to have the ack done *after* clearing the interrupt source,
otherwise we will get a spurious interrupt for each real interrupt.
So use the new IRQCHIP_EOI_THREADED flag for this in combination with
handle_fasteoi_irq. This uses a separate irq_chip struct for IRQ 0,
since we only want this behavior for IRQ 0.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-sunxi@googlegroups.com
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: http://lkml.kernel.org/r/1394733834-26839-5-git-send-email-hdegoede@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
