Commit Graph

152 Commits

Author SHA1 Message Date
Olof Johansson 167eeb4700 mvebu fixes for v3.13 (incremental #2)
- allow building and booting DT and non-DT plat-orion SoCs
  - catch proper return value for kirkwood_pm_init()
  - properly check return of of_iomap to solve boot hangs (mirabox, others)
  - remove a compile warning on Armada 370 with non-SMP.
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Merge tag 'mvebu-fixes-3.13-2' of git://git.infradead.org/linux-mvebu into fixes

mvebu fixes for v3.13 (incremental #2)

 - allow building and booting DT and non-DT plat-orion SoCs
 - catch proper return value for kirkwood_pm_init()
 - properly check return of of_iomap to solve boot hangs (mirabox, others)
 - remove a compile warning on Armada 370 with non-SMP.

* tag 'mvebu-fixes-3.13-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: fix compilation warning on Armada 370 (i.e. non-SMP)
  ARM: mvebu: Fix kernel hang in mvebu_soc_id_init() when of_iomap failed
  ARM: kirkwood: kirkwood_pm_init() should return void
  ARM: orion: provide C-style interrupt handler for MULTI_IRQ_HANDLER

Signed-off-by: Olof Johansson <olof@lixom.net>
2014-01-31 14:59:28 -08:00
Linus Torvalds 9b83d851a2 Xtensa patchset for 3.14-rc1
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Merge tag 'xtensa-next-20140123' of git://github.com/czankel/xtensa-linux

Pull Xtensa patches from Chris Zankel:
 "The major changes are adding support for SMP for Xtensa, fixing and
  cleaning up the ISS (simulator) network driver, and better support for
  device trees"

* tag 'xtensa-next-20140123' of git://github.com/czankel/xtensa-linux: (40 commits)
  xtensa: implement ndelay
  xtensa: clean up udelay
  xtensa: enable HAVE_PERF_EVENTS
  xtensa: remap io area defined in device tree
  xtensa: support default device tree buses
  xtensa: initialize device tree clock sources
  xtensa: xtfpga: fix definitions of platform devices
  xtensa: standardize devicetree cpu compatible strings
  xtensa: avoid duplicate of IO range definitions
  xtensa: fix ATOMCTL register documentation
  xtensa: Enable irqs after cpu is set online
  xtensa: ISS: raise network polling rate to 10 times/sec
  xtensa: remove unused XTENSA_ISS_NETWORK Kconfig parameter
  xtensa: ISS: avoid simple_strtoul usage
  xtensa: Switch to sched_clock_register()
  xtensa: implement CPU hotplug
  xtensa: add SMP support
  xtensa: add MX irqchip
  xtensa: clear timer IRQ unconditionally in its handler
  xtensa: clean up do_interrupt/do_IRQ
  ...
2014-01-25 10:49:30 -08:00
Linus Torvalds 0ba3307a8e ARM: driver updates for 3.14
Updates of SoC-near drivers and other driver updates that makes more sense to
 take through our tree.
 
 The largest part of this is a conversion of device registration for some
 renesas shmobile/sh devices over to use resources. This has required
 coordination with the corresponding arch/sh changes, and we've agreed
 to merge the arch/sh changes through our tree.
 
 Added in this branch is support for Trusted Foundations secure firmware,
 which is what is used on many of the commercial Nvidia Tegra products
 that are in the market, including the Nvidia Shield. The code is local
 to arch/arm at this time since it's uncertain whether it will be shared
 with arm64 longer-term, if needed we will refactor later.
 
 A couple of new RTC drivers used on ARM boards, merged through our tree
 on request by the RTC maintainer.
 
 ... plus a bunch of smaller updates across the board, gpio conversions
 for davinci, etc.
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Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM driver updates from Olof Johansson:
 "Updates of SoC-near drivers and other driver updates that makes more
  sense to take through our tree.

  The largest part of this is a conversion of device registration for
  some renesas shmobile/sh devices over to use resources.  This has
  required coordination with the corresponding arch/sh changes, and
  we've agreed to merge the arch/sh changes through our tree.

  Added in this branch is support for Trusted Foundations secure
  firmware, which is what is used on many of the commercial Nvidia Tegra
  products that are in the market, including the Nvidia Shield.  The
  code is local to arch/arm at this time since it's uncertain whether it
  will be shared with arm64 longer-term, if needed we will refactor
  later.

  A couple of new RTC drivers used on ARM boards, merged through our
  tree on request by the RTC maintainer.

  ... plus a bunch of smaller updates across the board, gpio conversions
  for davinci, etc"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (45 commits)
  watchdog: davinci: rename platform driver to davinci-wdt
  tty: serial: Limit msm_serial_hs driver to platforms that use it
  mmc: msm_sdcc: Limit driver to platforms that use it
  usb: phy: msm: Move mach dependent code to platform data
  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
  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_*
  serial: sh-sci: Add OF support
  serial: sh-sci: Add device tree bindings documentation
  serial: sh-sci: Remove platform data mapbase and irqs fields
  serial: sh-sci: Remove platform data scbrr_algo_id field
  ...
2014-01-23 18:49:36 -08:00
Linus Torvalds dfd10e7ae6 ARM: SoC platform changes for 3.14
New core SoC-specific changes.
 
 New platforms:
 * Introduction of a vendor, Hisilicon, and one of their SoCs with some
   random numerical product name.
 * Introduction of EFM32, embedded platform from Silicon Labs (ARMv7m, i.e. !MMU).
 * Marvell Berlin series of SoCs, which include the one in Chromecast.
 * MOXA platform support, ARM9-based platform used mostly in industrial products
 * Support for Freescale's i.MX50 SoC.
 
 Other work:
 * Renesas work for new platforms and drivers, and conversion over to
   more multiplatform-friendly device registration schemes.
 * SMP support for Allwinner sunxi platforms.
 * ... plus a bunch of other stuff across various platforms.
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Merge tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC platform changes from Olof Johansson:
 "New core SoC-specific changes.

  New platforms:
   * Introduction of a vendor, Hisilicon, and one of their SoCs with
     some random numerical product name.
   * Introduction of EFM32, embedded platform from Silicon Labs (ARMv7m,
     i.e. !MMU).
   * Marvell Berlin series of SoCs, which include the one in Chromecast.
   * MOXA platform support, ARM9-based platform used mostly in
     industrial products
   * Support for Freescale's i.MX50 SoC.

  Other work:
   * Renesas work for new platforms and drivers, and conversion over to
     more multiplatform-friendly device registration schemes.
   * SMP support for Allwinner sunxi platforms.
   * ... plus a bunch of other stuff across various platforms"

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (201 commits)
  ARM: tegra: fix tegra_powergate_sequence_power_up() inline
  ARM: msm_defconfig: Update for multi-platform
  ARM: msm: Move MSM's DT based hardware to multi-platform support
  ARM: msm: Only build timer.c if required
  ARM: msm: Only build clock.c on proc_comm based platforms
  ARM: ux500: Enable system suspend with WFI support
  ARM: ux500: turn on PRINTK_TIME in u8500_defconfig
  ARM: shmobile: r8a7790: Fix I2C controller names
  ARM: msm: Simplify ARCH_MSM_DT config
  ARM: msm: Add support for MSM8974 SoC
  ARM: sunxi: select ARM_PSCI
  MAINTAINERS: Update Allwinner sunXi maintainer files
  ARM: sunxi: Select RESET_CONTROLLER
  ARM: imx: improve the comment of CCM lpm SW workaround
  ARM: imx: improve status check of clock gate
  ARM: imx: add necessary interface for pfd
  ARM: imx_v6_v7_defconfig: Select CONFIG_REGULATOR_PFUZE100
  ARM: imx_v6_v7_defconfig: Select MX35 and MX50 device tree support
  ARM: imx: Add cpu frequency scaling support
  ARM i.MX35: Add devicetree support.
  ...
2014-01-23 18:40:49 -08:00
Arnaud Ebalard 19e61d4140 ARM: mvebu: fix compilation warning on Armada 370 (i.e. non-SMP)
The following appears during compilation for an Armada 370 target
because 'irq_controller_lock' is used only when CONFIG_SMP is
enabled:

 drivers/irqchip/irq-armada-370-xp.c:62:8: warning: 'irq_controller_lock' defined but not used [-Wunused-variable]

Fix that warning by moving declaration of 'irq_controller_lock'
inside existing #ifdef.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-01-21 00:55:47 +00:00
Kevin Hilman 099c2e9ef6 Some non-urgent fixes to enable am335x features, update documentation,
and to remove unnecessary double initialization for the GPMC code.
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Merge tag 'omap-for-v3.14/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/fixes-non-critical

From Tony Lindgren:
Some non-urgent fixes to enable am335x features, update documentation,
and to remove unnecessary double initialization for the GPMC code.

* tag 'omap-for-v3.14/fixes-not-urgent-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (238 commits)
  ARM: OMAP2+: gpmc: Move legacy GPMC width setting
  ARM: OMAP2+: gpmc: Introduce gpmc_set_legacy()
  ARM: OMAP2+: gpmc: Move initialization outside the gpmc_t condition
  ARM: OMAP2+: board-generic: update SoC compatibility strings
  Documentation: dt: OMAP: explicitly state SoC compatible strings
  ARM: OMAP2+: enable AM33xx SOC EVM audio
  ARM: OMAP2+: Select USB PHY for AM335x SoC
  +Linux 3.13-rc5
2014-01-14 14:20:19 -08:00
Max Filippov 26a8e96a8b xtensa: add MX irqchip
MX is an interrupt distributor used in some SMP-capable xtensa
configurations.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:58 -08:00
Max Filippov cbd1de2e8e xtensa: move built-in PIC to drivers/irqchip
Extract xtensa built-in interrupt controller implementation from
xtensa/kernel/irq.c and move it to other irqchips, providing way to
instantiate it from the device tree.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
2014-01-14 10:19:56 -08:00
Barry Song a87010ef32 irqchip: sirf: set IRQ_LEVEL status_flags
SiRF internal interrupts are using level trigger. we need to tell the irq
core this information. otherwise, we might get some problems as below
1. disable_irq(n)
here irq core will mark the disabled flag but still keep the irq enabled
due to involved lazy-disable
2. doing someting after disable_irq(n)
in step 2, if one interrupt n comes, irq core will mark it as pending and
mask the HW interrupt really. we name the coming interrupt as "X".
3. enable_irq(n)
this will unmask the interrupt, so the level-trigger HW interrupt will come
again, irq_handler will enter as "E1". after that, irq core will also check
whether irq n is pending, if yes, and pending interrupt is not level-trigger,
irq core will execute the pending irq_handler.
so if we don't set the IRQ_LEVEL flag here, irq core will execute pending
X again as "E2", but actually the pending interrupt has been handled by "E1".
that makes a level-trigger HW interrupt is executed twice.

here we fix the issue to avoid redundant interrupt overload.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Huayi Li <Huayi.Li@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2014-01-08 22:02:14 -08:00
Olof Johansson 3d7e0207ce 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.
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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>
2014-01-03 21:55:29 -08:00
Linus Walleij bdd272cbb9 irqchip: versatile FPGA: support cascaded interrupts from DT
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>
2014-01-03 22:26:13 +01:00
Olof Johansson a7dedb4fea 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.
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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>
2014-01-02 11:45:27 -08:00
Olof Johansson 9d6b65e945 Renesas ARM based SoC IRQC Driver Updates for v3.14
* Simplify irq_set_type() method
 * Enable mask on suspend
 * Use lazy disable
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Merge tag 'renesas-irqc-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/drivers

From Simon Horman:
Renesas ARM based SoC IRQC Driver Updates for v3.14

* Simplify irq_set_type() method
* Enable mask on suspend
* Use lazy disable

* tag 'renesas-irqc-for-v3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  irq-renesas-irqc: simplify irq_set_type() method
  irqchip: renesas-irqc: Enable mask on suspend
  irqchip: renesas-irqc: Use lazy disable

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-12-29 13:26:13 -08:00
Sergei Shtylyov ce70af1880 irq-renesas-irqc: simplify irq_set_type() method
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>
2013-12-23 09:27:17 +09:00
Kevin Hilman 95fcfa70f3 Renesas ARM based SoC fixes for v3.13
* r8a7790 (R-Car H1) SoC
   - Correct GPIO resources in DT.
 
     This problem has been present since GPIOs were added to the r8a7790 SoC
     by f98e10c88a ("ARM: shmobile: r8a7790: Add GPIO controller
     devices to device tree") in v3.12-rc1.
 
 * irqchip renesas-intc-irqpin
   - Correct register bitfield shift calculation
 
     This bug has been present since the renesas-intc-irqpin driver was
     introduced by 443580486e ("irqchip: Renesas INTC External IRQ pin
     driver") in v3.10-rc1
 
 * Lager board
   - Do not build the phy fixup unless CONFIG_PHYLIB is enabled
 
     This problem was introduced by 48c8b96f21
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Merge tag 'renesas-fixes-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

From Simon Horman:
Renesas ARM based SoC fixes for v3.13

* r8a7790 (R-Car H1) SoC
  - Correct GPIO resources in DT.

    This problem has been present since GPIOs were added to the r8a7790 SoC
    by f98e10c88a ("ARM: shmobile: r8a7790: Add GPIO controller
    devices to device tree") in v3.12-rc1.

* irqchip renesas-intc-irqpin
  - Correct register bitfield shift calculation

    This bug has been present since the renesas-intc-irqpin driver was
    introduced by 443580486e ("irqchip: Renesas INTC External IRQ pin
    driver") in v3.10-rc1

* Lager board
  - Do not build the phy fixup unless CONFIG_PHYLIB is enabled

    This problem was introduced by 48c8b96f21

* tag 'renesas-fixes-for-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: r8a7790: Fix GPIO resources in DTS
  irqchip: renesas-intc-irqpin: Fix register bitfield shift calculation
  ARM: shmobile: lager: phy fixup needs CONFIG_PHYLIB

Signed-off-by: Kevin Hilman <khilman@linaro.org>
2013-12-20 11:28:30 -08:00
Kevin Hilman 490b929d42 Merge branch 'efm32/soc' into next/soc
From Uwe Kleine-König:
* efm32/soc: (1003 commits)
  ARM: device trees for Energy Micro's EFM32 Cortex-M3 SoCs
  ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs
  +Linux 3.13-rc4

Signed-off-by: Kevin Hilman <khilman@linaro.org>
2013-12-20 08:59:30 -08:00
Sebastian Hesselbarth 350d71b94f irqchip: add DesignWare APB ICTL interrupt controller
This adds an irqchip driver and corresponding devicetree binding for the
secondary interrupt controllers based on Synopsys DesignWare IP dw_apb_ictl.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Jisheng Zhang <jszhang@marvell.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
2013-12-13 16:29:40 +01:00
Magnus Damm 6a7e3b3007 irqchip: renesas-irqc: Enable mask on suspend
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>
2013-12-12 21:02:42 +09:00
Magnus Damm 272012d0f7 irqchip: renesas-irqc: Use lazy disable
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>
2013-12-12 21:01:23 +09:00
Linus Torvalds a45299e727 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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
2013-12-02 10:15:39 -08:00
Chander Kashyap 9403ac8822 irqchip: exynos-combiner: remove hard-coded irq_base value
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>
2013-12-02 07:15:51 +09:00
Mark Rutland 08332dff8a irqchip: Gic: fix boot for chained gics
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>
2013-11-28 15:41:53 +01:00
Laurent Pinchart e55bc55867 irqchip: renesas-intc-irqpin: Fix register bitfield shift calculation
The SENSE register bitfield position is incorrectly computed for SoCs
that use 2-bit IRQ sense fields. Fix it.

This has been tested on the Marzen (H1) and Bockw (M1) boards.

This bug has been present since the renesas-intc-irqpin driver was
introduced by 443580486e ("irqchip: Renesas INTC External IRQ pin
driver") in v3.10-rc1.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Magnus Damm <damm@opensource.se>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2013-11-24 15:55:17 +09:00
Linus Torvalds f47671e2d8 Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
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
  ...
2013-11-14 08:51:29 +09:00
Linus Torvalds 1006fae359 Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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 ded797547548: "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
2013-11-12 10:02:59 +09:00
Linus Torvalds f9efbce633 ARM: SoC DT updates for 3.13
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
  ...
2013-11-11 17:34:56 +09:00
Axel Lin 5702941eec irqchip: bcm2835: Convert to use IRQCHIP_DECLARE macro
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>
2013-11-07 10:37:37 +01:00
Thomas Petazzoni 31f614edb7 irqchip: armada-370-xp: implement MSI support
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>
2013-09-30 14:58:12 +00:00
Thomas Petazzoni 627dfcc249 irqchip: armada-370-xp: properly request resources
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>
2013-09-30 14:58:07 +00:00
Nicolas Pitre 14d2ca615a ARM: GIC: interface to send a SGI directly
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>
2013-09-23 18:47:28 -04:00
Nicolas Pitre eeb446581b ARM: GIC: function to retrieve the physical address of the SGIR
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>
2013-09-23 18:47:28 -04:00
Russell King 7f63037c8f Merge branch 'iks_for_rmk' of git://git.linaro.org/people/nico/linux into devel-stable
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
2013-09-17 15:14:07 +01:00
Tomasz Figa 81e9c1794f irqchip: vic: Parse interrupt and resume masks from device tree
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>
2013-09-17 06:48:27 +09:00
Linus Torvalds 6404141718 ARM: SoC late changes for v3.12
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
  ...
2013-09-09 16:35:29 -07:00
Linus Torvalds a35c6322e5 ARM: SoC drivers for v3.12
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()
2013-09-09 16:08:13 -07:00
Linus Torvalds 255ae3fbd2 Metag architecture changes for v3.12
- 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
2013-09-09 09:09:44 -07:00
Linus Torvalds 8e73e367f7 ARM: SoC cleanups for 3.12
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
  ...
2013-09-06 13:21:16 -07:00
Olof Johansson 66fafb6fbf move irq driver out of mach-mmp to support multiplatform
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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
2013-08-29 13:21:24 -07:00
Barry Song 29eb51a728 irqchip: sirf: move from legacy mode to linear irqdomain
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>
2013-08-29 09:48:32 -07:00
Nicolas Pitre 10d9eb8a17 drivers: irq-chip: irq-gic: introduce gic_cpu_if_down()
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>
2013-08-28 11:28:43 -07:00
Haojian Zhuang 942f42214d irqchip: mmp: avoid to include irqs head file
Since <mach/irqs.h> in irq-mmp.c blocks the multiplatform build,
remove it instead.

Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2013-08-24 17:45:47 +08:00
Haojian Zhuang 0f102b6cce ARM: mmp: avoid to include head file in mach-mmp
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>
2013-08-24 17:44:45 +08:00
Haojian Zhuang 0f374561b5 irqchip: mmp: support irqchip
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>
2013-08-24 17:42:09 +08:00
Haojian Zhuang c052d13c08 irqchip: move mmp irq driver
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>
2013-08-24 17:39:02 +08:00
Kevin Hilman 8a75f0a07c samsung cleanup for v3.12
- cleanup non-dt stuff in exynos
 - remove 0x from exynos dt files
 - remove unused codes
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Merge tag 'samsung-cleanup-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup

From Kukjin Kim:
samsung cleanup for v3.12
- cleanup non-dt stuff in exynos
- remove 0x from exynos dt files
- remove unused codes

* tag 'samsung-cleanup-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: SAMSUNG: Remove unnecessary exynos4_default_sdhci*()
  ARM: dts: Remove '0x's from Exynos5440 DTS file
  ARM: dts: Remove '0x's from Exynos5420 DTS file
  ARM: dts: Remove '0x's from Exynos5250 DTS file
  ARM: dts: Remove '0x's from Exynos4x12 DTSI file
  ARM: dts: Remove '0x's from Exynos4210 DTSI file
  ARM: EXYNOS: Cleanup common.h file
  irqchip: exynos: cleanup non-DT stuff in exynos-combiner

Signed-off-by: Kevin Hilman <khilman@linaro.org>
2013-08-22 08:11:41 -07:00
James Hogan b6ef9161e4 irq-imgpdc: add ImgTec PDC irqchip driver
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
2013-08-21 14:17:56 +01:00
Nicolas Pitre ed96762e32 ARM: bL_switcher: do not hardcode GIC IDs in the code
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>
2013-07-30 09:02:16 -04:00
Nicolas Pitre 1a6b69b654 ARM: gic: add CPU migration support
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>
2013-07-30 09:02:12 -04:00
Kukjin Kim 0f5615117b irqchip: exynos: cleanup non-DT stuff in exynos-combiner
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>
2013-07-16 12:30:40 +09:00
Paul Gortmaker 8c37bb3ac9 clocksource+irqchip: delete __cpuinit usage from all related files
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>
2013-07-14 19:36:57 -04:00