This reverts commit 493bd064da and
the subsequent patch that renamed the functions
84dd82a827. This functionality is
no longer used because the RPM driver doesn't support being
called in atomic context.
Change-Id: I4a46de2c0721f50fbc2b36f26cfa1fa27d30481f
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Print the enabled and pending interrupt to help investigate cpu
hotplug failure.
CRs-fixed: 675717
Change-Id: Ib85302ed84ed6e6bdb6bfac593021da9eb790330
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>
Currently when none of msm TLMM pinctrl drivers is configured, mpm-of
driver tries to use irq extension from TLMM driver and results in build
error. Fix mpm-of driver to refer to proper irq extension.
Also revise driver init function to avoid null pointer dereference
accordingly for the case irq extension is null accordingly.
Change-Id: I966d58ba2701d3c092b9aa8f425c28e51b4881f1
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
The #ifdefs were defined in such a way that PINCTRL and GPIO_MSM
were still related. Clean the #ifdefs and make PINCTRL and GPIO_MSM
be selectable individually.
Change-Id: I8212cd7e36a9b2924292afcd454ba1d3518d7ab5
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
Compilation error due to missing comma at function definition.
Change-Id: If842fab71b811088a8ab961bb8cc3b57d830c20a
Signed-off-by: Raviv Shvili <rshvili@codeaurora.org>
Modify the affinity of the interrupts associated with PM driver to the cpu
that will wakeup for the next expiring timer.
Change-Id: I6a1b25538a6d12bada3345a17b3ed4ff181ac089
Signed-off-by: Mahesh Sivasubramanian <msivasub@codeaurora.org>
MPM hardware acts as an interrupt controller when the apps has gone
to deep sleep states where GIC (the apps main interrupt controller)
has power collapsed. The MPM monitors certain GIC and GPIO lines
while APPS is sleeping and wakesup the apps when a favourable
transition is seen on those monitored lines.
It is an interrupt controller hence move its header to include/irqchip.
Change-Id: I2599784dd91bba73b51ca197e8da69b9c56f78a5
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
The current gpio driver exposes a single header inside the mach-msm
directory. The driver implements an interrupt controller also in
addition to being a gpio controller. Separate the header that defines
functions for interrupt controller activities.
Change-Id: Id443f4da55e3d32578038dc0aa505cde847b175d
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
The qpnp-int.h header file resides under mach-msm's include directory.
qpnp-int is a irq controller driver and so should reside in
include/linux/irqchip. Move it there.
Change-Id: Ic3e427c44a15132c4d909eb2d4d688634995d30f
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
This reverts commit a539ac31ba.
Dropping support for MSM8625 to clean up for arm64.
Conflicts:
include/linux/irqchip/arm-gic.h
drivers/irqchip/irq-gic.c
Change-Id: I9c54bde5b080da36930cf1286c17896e2bd5966b
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
This reverts commit 991d7099f5.
Dropping support for MSM8625.
Change-Id: I4f0042d94109c0ec1f0fc26335e5a47e324878dc
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
This reverts commit 7c2c583f93.
Dropping support for MSM8625.
Change-Id: I814f5ded6e8f59e87ddb9f716e821e99fa5d4bed
Signed-off-by: Abhimanyu Kapur <abhimany@codeaurora.org>
Remove modem_wake and from_idle parameters from msm_gic_save
API since they are not used at all.
Change-Id: Icd1a83aea6b0eb988c19ccdbaf65b1f5be9e8ac2
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
msm_gic_save/restore APIs were added to save the context of the
GIC across the apps. power collapse since 8625 PM framework
doesn't use the CPUIdle framework of the kernel. If the CPUIdle
framework was in use then we could have used the GIC driver provided
notification mechanism which takes of calling appropriate functions.
There is no need to protect these APIs using this #ifdef since there
is nothing specific to 8625 inside, also add empty functions for save
and restore since not all targets have CPU_PM defined.
Change-Id: I02bb4e4021c31caf7ab1282fb675d45ffba42a66
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
Rename gic_is_spi_pending and gic_clear_spi_pending APIs
to generic gic_is_irq_pending and gic_clear_irq_pending names
since this API could be used for anyother interrupts, and while
at it also use proper style for the multi-line comments around
these APIs.
Change-Id: I7d440f3caa0ebc77483d1ba43eff7932d5ac6666
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
5 patches:
ARM: gic: Add spinlocks for SGIR/AIR/EOI for 8625
On 8625 due to bug in AHB MUX on hready, back to back write followed
by read (from any CPU) on QGIC2 registers (SGIR(WO) ,IAR(RO) and
write on EOI(WO)) cause the read data to get corrupted on AHB bus.
Due to this whenever a valid irq has occurs, and dispatched to the cpu
interface but still cpu reads the IAR as 0x0 and that particular IRQ
becomes active.
But due to incorrect irq id (read as 0x0), IRQ handler will not do
proper EOI for that particular interrupt and thus it gets trapped
in the active state.
Below is the qgic register dump from CPU-1, in this particular case
we see that SGI-3 is not getting clear as cpu reads this as 0x0.
AZSD:C0000200| 00240008 00000000 00008000 00000000 00000000 00000000
00000000 00000000 ..$.............................
AZSD:C0000280| 00240008 00000000 00008000 00000000 00000000 00000000
00000000 00000000 ..$.............................
AZSD:C0000300| 00040008 00000000 00000000 00000000 00000000 00000000
00000000 00000000 ................................
AZSD:C0000380| 00040008 00000000 00000000 00000000 00000000 00000000
00000000 00000000 ................................
As the interrupt gets trapped, no other interrupt received on the core is
services any more causing the system hang.
CRs-Fixed: 349219
Change-Id: Icad2c65114377a08984b1032566cfba811bb4ca8
Signed-off-by: Taniya Das <tdas@codeaurora.org>
(cherry picked from commit 6639886be3b2326bcce81a3d553bc91b6de793ac)
ARM: gic: Move GIC based code out from mpm-8625
Moving code which modifies the GIC registers. As there is no global
lock in gic code, moving the code out.
Change-Id: I85a2bd580dbeefc942a3307f3c0cad8b1da509b7
Signed-off-by: Taniya Das <tdas@codeaurora.org>
(cherry picked from commit bc9248ab6fd94f9f5f2a818e7d8b67645b4310cb)
ARM: gic: protect some of 8625 GIC functionality with irq spinlocks
msm_gic_spi_ppi_pending, msm_gic_save and core1_gic_configure_and_raise
gets called with interrupt enabled on the core0, so it is possible
that we get into the spinlock deadlock since interrupt like timer PPI
could get fired on core0 and get locked in gic_handle_irq() routine
itself, so move these spinlocks to irqsave variants to avoid this
scenario.
CRs-Fixed: 363249
Change-Id: I2d40d6e26f5d9dba4ee6b9d4602cd0e685226693
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
(cherry picked from commit 6278db09f0535ca05d6bc12bfbb4ef4aa9da0652)
ARM: gic: Disable all interrupts before Power collapse
We may enter PC from either suspend or idle path. So even
if we enter from suspend path we should disable all interrupts
before we go to Power collapse, so as to make sure, there
are no pending interrupts(not even the wakeup capable) which
could result in WFI failure.
CRs-Fixed: 363293
Change-Id: Ied25b21f59a9fa0a891a27a2e806876cc337a759
Signed-off-by: Taniya Das <tdas@codeaurora.org>
(cherry picked from commit 8862d7d2202f33a6fe2f219aca0b2d7bb62b570e)
ARM: gic: Remove unnecessary irq spinlocks from gic_resume path
Remove the unnecessary irq spinlocks from gic resume path since it
always gets called with interrupt disabled. It also fixes the bug
introduced by commit 6278db09f where it called spin_lock again on the same
lock.
CRs-Fixed: 370894
Change-Id: I94f81cc0d93f362ac233c9af637cbe75036903f9
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
Configure the GIC to run in secure mode and handle
secure as well as non-secure interrupts. This patch
adds an API to configure an IRQ as a secure IRQ so that
it can be treated as an FIQ in the secure mode.
Change-Id: Ic3321e76c95a4c10d6287ba418e84623e7004cb1
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
Signed-off-by: Sathish Ambley <sambley@codeaurora.org>
(cherry picked from commit 26e44869e1e730ec7434e899dfd5857530b63415)
Some kernel code needs to check for and clear specific pending
interrupt explicitly. The polling and clearing may happen in
contexts where interrupts are masked off at the cpu level.
Change-Id: Icba9bb2f05e9fc61dd48c4174c4d276ab20b4244
Signed-off-by: Ai Li <aili@codeaurora.org>
(cherry picked from commit 20b3c0ee6e4852af8c52fb5f98188530760c8c74)
Conflicts:
arch/arm/include/asm/hardware/gic.h
- 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.
* Clean up timer code and move it into drivers/clocksource
* Clean up icoll code and move it into drivers/irqchip
* Clean up clock code to not include <mach/*> headers
* Clean up rtc-stmp3xxx, mxs-lradc and mxs-saif to not include <mach/*>
headers
* Clean up mach-mxs code to get it prepared for multiplatform support
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Merge tag 'mxs-cleanup-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/cleanup
From Shawn Guo <shawn.guo@linaro.org>:
The mxs cleanup for 3.10:
* Clean up timer code and move it into drivers/clocksource
* Clean up icoll code and move it into drivers/irqchip
* Clean up clock code to not include <mach/*> headers
* Clean up rtc-stmp3xxx, mxs-lradc and mxs-saif to not include <mach/*>
headers
* Clean up mach-mxs code to get it prepared for multiplatform support
* tag 'mxs-cleanup-3.10' of git://git.linaro.org/people/shawnguo/linux-2.6: (26 commits)
clocksource: mxs_timer: Add semicolon at end of line
ARM: mxs: remove unused headers
ARM: mxs: merge imx23 and imx28 into one machine_desc
ARM: mxs: remove common.h
ARM: mxs: move mxs_get_ocotp() into mach-mxs.c
ARM: mxs: remove mm.c
ARM: mxs: use debug_ll_io_init for low-level debug
ARM: mxs: get ocotp base address from device tree
ARM: mxs: remove system.c
ARM: mxs: get reset address from device tree
ARM: mxs: remove empty hardware.h
ASoC: mxs-saif: remove mach header inclusion
iio: mxs-lradc: remove unneeded mach header inclusion
rtc: stmp3xxx: use stmp_reset_block() instead
clk: mxs: remove the use of mach level IO accessor
clk: mxs: get base address from device tree
ARM: mxs: remove unneeded mach-types.h inclusion
ARM: mxs: move icoll driver into drivers/irqchip
ARM: mxs: call stmp_reset_block() in icoll
ARM: mxs: get icoll base address from device tree
...
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This allows to remove some boilerplate code. At the same time, call the
set_handle_irq function in the initialization function of the irqchip,
so that we can remove it from the machine declaration.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Move icoll.c into drivers/irqchip as irq-mxs.c, and along with the
renaming, change the driver to use IRQCHIP_DECLARE.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
All the calls to gic_secondary_init() pass 0 as the first argument.
Since this function is called on each CPU when starting, it can be done
in a platform-independent way via a CPU notifier registered by the GIC
code.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Tested-by: Dinh Nguyen <dinguyen@altera.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Barry Song <baohua.song@csr.com>
These functions have been introduced by commit 10a8c383 (irq: introduce
entry and exit functions for chained handlers) in asm/mach/irq.h. This
patch moves them to linux/irqchip/chained_irq.h so that generic irqchip
drivers do not rely on architecture specific header files.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Rob Herring <rob.herring@calxeda.com>
This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:
- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()
Signed-off-by: James Hogan <james.hogan@imgtec.com>
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Merge tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull new ImgTec Meta architecture from James Hogan:
"This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:
- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of
metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()"
* tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits)
metag: Provide dma_get_sgtable()
metag: prom.h: remove declaration of metag_dt_memblock_reserve()
metag: copy devicetree to non-init memory
metag: cleanup metag_ksyms.c includes
metag: move mm/init.c exports out of metag_ksyms.c
metag: move usercopy.c exports out of metag_ksyms.c
metag: move setup.c exports out of metag_ksyms.c
metag: move kick.c exports out of metag_ksyms.c
metag: move traps.c exports out of metag_ksyms.c
metag: move irq enable out of irqflags.h on SMP
genksyms: fix metag symbol prefix on crc symbols
metag: hugetlb: convert to vm_unmapped_area()
metag: export clear_page and copy_page
metag: export metag_code_cache_flush_all
metag: protect more non-MMU memory regions
metag: make TXPRIVEXT bits explicit
metag: kernel/setup.c: sort includes
perf: Enable building perf tools for Meta
metag: add boot time LNKGET/LNKSET check
metag: add __init to metag_cache_probe()
...
Meta core internal interrupts (from HWSTATMETA and friends) are vectored
onto the TR1 core trigger for the current thread. This is demultiplexed
in irq-metag.c to individual Linux IRQs for each internal interrupt.
External SoC interrupts (from HWSTATEXT and friends) are vectored onto
the TR2 core trigger for the current thread. This is demultiplexed in
irq-metag-ext.c to individual Linux IRQs for each external SoC interrupt.
The external irqchip has devicetree bindings for configuring the number
of irq banks and the type of masking available.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Rob Landley <rob@landley.net>
Cc: Dom Cobley <popcornmix@gmail.com>
Cc: Simon Arlott <simon@fire.lp0.eu>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-doc@vger.kernel.org
The GIC include file being used by some of the KVM assembly code,
wrap the C definitions with a #ifdef __ASSEMBLY__ guard.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
The GICH_* constants are defined by the GIC HW spec, and even though
they only be used by KVM to begin with, define them generically in gic.h.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Add missing register map offsets for the distributor and rename
GIC_DIST_ACTIVE_BIT to GIC_DIST_ACTIVE_SET to be consistent.
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Now that we have VIC moved to drivers/irqchip and all VIC DT init for
platforms using irqchip_init, move gic.h and update the remaining
includes.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Alessandro Rubini <rubini@unipv.it>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: STEricsson <STEricsson_nomadik_linux@list.st.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-samsung-soc@vger.kernel.org
Now that we have GIC moved to drivers/irqchip and all GIC DT init for
platforms using irqchip_init, move gic.h and update the remaining
includes.
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Anton Vorontsov <avorontsov@mvista.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
This branch contains device-tree updates for the SPEAr platform.
They had dependencies on earlier branches from this merge window,
which is why they were broken out in a separate branch.
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Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device-tree updates, take 2, from Olof Johansson:
"This branch contains device-tree updates for the SPEAr platform. They
had dependencies on earlier branches from this merge window, which is
why they were broken out in a separate branch."
* tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: SPEAr3xx: Shirq: Move shirq controller out of plat/
ARM: SPEAr320: DT: Add SPEAr 320 HMI board support
ARM: SPEAr3xx: DT: add shirq node for interrupt multiplexor
ARM: SPEAr3xx: shirq: simplify and move the shared irq multiplexor to DT
ARM: SPEAr1310: Fix AUXDATA for compact flash controller
ARM: SPEAr13xx: Remove fields not required for ssp controller
ARM: SPEAr1310: Move 1310 specific misc register into machine specific files
ARM: SPEAr: DT: Update device nodes
ARM: SPEAr: DT: add uart state to fix warning
ARM: SPEAr: DT: Modify DT bindings for STMMAC
ARM: SPEAr: DT: Fix existing DT support
ARM: SPEAr: DT: Update partition info for MTD devices
ARM: SPEAr: DT: Update pinctrl list
ARM: SPEAr13xx: DT: Add spics gpio controller nodes
This patch moves shirq interrupt controllers driver and header file out of
plat-spear directory. It is moved to drivers/irqchip/ directory.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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Merge tag 'tags/sunxi-support-for-3.8' of git://github.com/mripard/linux into next/soc
From Maxime Ripard:
Allwinner SoC support for 3.8
* tag 'tags/sunxi-support-for-3.8' of git://github.com/mripard/linux:
ARM: sunxi: Add entry to MAINTAINERS
ARM: sunxi: Add device tree for the A13 and the Olinuxino board
ARM: sunxi: Add earlyprintk support
ARM: sunxi: Add basic support for Allwinner A1x SoCs
irqchip: sunxi: Add irq controller driver
clocksource: sunxi: Add Allwinner A1X Timer Driver
clk: sunxi: Add dummy fixed rate clock for Allwinner A1X SoCs
Signed-off-by: Olof Johansson <olof@lixom.net>
This moves the Versatile FPGA interrupt controller driver, used in
the Integrator/AP, Integrator/CP and some Versatile boards, out
of arch/arm/plat-versatile and down to drivers/irqchip where we
have consensus that such drivers belong. The header file is
consequently moved to <linux/platform_data/irq-versatile-fpga.h>.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The BCM2835 contains a custom interrupt controller, which supports 72
interrupt sources using a 2-level register scheme. The interrupt
controller, or the HW block containing it, is referred to occasionally
as "armctrl" in the SoC documentation, hence the symbol naming in the
code.
This patch was extracted from git://github.com/lp0/linux.git branch
rpi-split as of 2012/09/08, and modified as follows:
* s/bcm2708/bcm2835/.
* Modified device tree vendor prefix.
* Moved implementation to drivers/irchip/.
* Added devicetree documentation, and hence removed list of IRQs from
bcm2835.dtsi.
* Changed shift in MAKE_HWIRQ() and HWIRQ_BANK() from 8 to 5 to reduce
the size of the hwirq space, and pass the total size of the hwirq space
to irq_domain_add_linear(), rather than just the number of valid hwirqs;
the two are different due to the hwirq space being sparse.
* Added the interrupt controller DT node to the top-level of the DT,
rather than nesting it inside a /axi node. Hence, changed the reg value
since /axi had a ranges property. This seems simpler to me, but I'm not
sure if everyone will like this change or not.
* Don't set struct irq_domain_ops.map = irq_domain_simple_map, hence
removing the need to patch include/linux/irqdomain.h or
kernel/irq/irqdomain.c.
* Simplified armctrl_of_init() using of_iomap().
* Removed unused IS_VALID_BANK()/IS_VALID_IRQ() macros.
* Renamed armctrl_handle_irq() to prevent possible symbol clashes.
* Made armctrl_of_init() static.
* Removed comment "Each bank is registered as a separate interrupt
controller" since this is no longer true.
* Removed FSF address from license header.
* Added my name to copyright header.
Signed-off-by: Chris Boot <bootc@bootc.net>
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Signed-off-by: Dom Cobley <dc4@broadcom.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Stephen Boyd