Commit Graph

18927 Commits

Author SHA1 Message Date
Roland Stigge
e92935e13a gpio/lpc32xx: Add device tree support
This patch adds device tree support for gpio-lpc32xx.c.

To register the various GPIO banks as (struct) gpio_chips via the same DT
gpio-controller, we utilize the adjusted of_xlate API to manipulate the
actually used struct gpio_chip.

Signed-off-by: Roland Stigge <stigge@antcom.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-18 16:48:36 -06:00
Grant Likely
3d0f7cf0f3 gpio: Adjust of_xlate API to support multiple GPIO chips
This patch changes the of_xlate API to make it possible for multiple
gpio_chips to refer to the same device tree node.  This is useful for
banked GPIO controllers that use multiple gpio_chips for a single
device.  With this change the core code will try calling of_xlate on
each gpio_chip that references the device_node and will return the
gpio number for the first one to return 'true'.

Tested-by: Roland Stigge <stigge@antcom.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-18 16:48:36 -06:00
Grant Likely
453007cf47 Merge branch 'for_3.5/gpio/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into gpio/next 2012-05-11 18:51:19 -06:00
Tarun Kanti DebBarma
4e962e8998 gpio/omap: remove cpu_is_omapxxxx() checks from *_runtime_resume()
Add register offsets for GPIO_IRQSTATUS_RAW_0, GPIO_IRQSTATUS_RAW_0
which are present on OMAP4+ processors. Now we can distinguish
conditions applicable to OMAP4,5 and those specific to OMAP24xx
and OMAP3xxx.

Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Cousson, Benoit <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-05-11 17:08:40 -07:00
Tarun Kanti DebBarma
d13710a7e6 gpio/omap: remove virtual_irq_start variable
This cleanup got missed while implementing following:
25db711 gpio/omap: Fix IRQ handling for SPARSE_IRQ
384ebe1 gpio/omap: Add DT support to GPIO driver

Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Cousson, Benoit <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
2012-05-11 17:08:39 -07:00
Mark Brown
7563bbf89d gpiolib/arches: Centralise bolierplate asm/gpio.h
Rather than requiring architectures that use gpiolib but don't have any
need to define anything custom to copy an asm/gpio.h provide a Kconfig
symbol which architectures must select in order to include gpio.h and
for other architectures just provide the trivial implementation directly.

This makes it much easier to do gpiolib updates and is also a step towards
making gpiolib APIs available on every architecture.

For architectures with existing boilerplate code leave a stub header in
place which warns on direct inclusion of asm/gpio.h and includes
linux/gpio.h to catch code that's doing this.  Direct inclusion of
asm/gpio.h has long been deprecated.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jonas Bonn <jonas@southpole.se>
Acked-by: Tony Luck <tony.luck@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-05-11 18:00:14 -06:00
Linus Torvalds
655861e328 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King.

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7406/1: hotplug: copy the affinity mask when forcefully migrating IRQs
  ARM: 7405/1: kexec: call platform_cpu_kill on the killer rather than the victim
  ARM: 7403/1: tls: remove covert channel via TPIDRURW
  ARM: 7401/1: mm: Fix section mismatches
  ARM: OMAP: fix DMA vs memory ordering
  ARM: 7390/1: dts: versatile-pb/ab fix MMC IRQs
  ARM: 7400/1: vfp: clear fpscr length and stride bits on entry to sig handler
  ARM: 7399/1: vfp: move user vfp state save/restore code out of signal.c
  ARM: 7398/1: l2x0: only write to debug registers on PL310
  ARM: 7397/1: l2x0: only apply workaround for erratum #753970 on PL310
  ARM: 7396/1: errata: only handle ARM erratum #326103 on affected cores
2012-04-30 15:34:41 -07:00
Linus Torvalds
b990f9b3cb ARM: SoC fixes for 3.4-rc
Nothing controversial, just another batch of fixes:
 
 - Samsung/exynos fixes for more merge window fallout: build errors and
   warnings mostly, but also some clock/device setup issues on exynos4/5
 - PXA bug and warning fixes related to gpio and pinmux
 - IRQ domain conversion bugfixes for U300 and MSM
 - A regulator setup fix for U300
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Nothing controversial, just another batch of fixes:

   - Samsung/exynos fixes for more merge window fallout: build errors
     and warnings mostly, but also some clock/device setup issues on
     exynos4/5
   - PXA bug and warning fixes related to gpio and pinmux
   - IRQ domain conversion bugfixes for U300 and MSM
   - A regulator setup fix for U300"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: PXA2xx: MFP: fix potential direction bug
  ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUT
  arm/sa1100: fix sa1100-rtc memory resource
  ARM: pxa: fix gpio wakeup setting
  ARM: SAMSUNG: add missing MMC_CAP2_BROKEN_VOLTAGE capability
  ARM: EXYNOS: Fix compilation error when CONFIG_OF is not defined
  ARM: EXYNOS: Fix resource on dev-dwmci.c
  ARM: S3C24XX: Fix build warning for S3C2410_PM
  ARM: mini2440_defconfig: Fix build error
  ARM: msm: Fix gic irqdomain support
  ARM: EXYNOS: Fix incorrect initialization of GIC
  ARM: EXYNOS: use 'exynos4-sdhci' as device name for sdhci controllers
  ARM: u300: bump all IRQ numbers by one
  ARM: ux300: Fix unimplementable regulation constraints
2012-04-28 09:28:43 -07:00
Will Deacon
5e7371ded0 ARM: 7406/1: hotplug: copy the affinity mask when forcefully migrating IRQs
When a CPU is hotplugged off, we migrate any IRQs currently affine to it
away and onto another online CPU by calling the irq_set_affinity
function of the relevant interrupt controller chip. This function
returns either IRQ_SET_MASK_OK or IRQ_SET_MASK_OK_NOCOPY, to indicate
whether irq_data.affinity was updated.

If we are forcefully migrating an interrupt (because the affinity mask
no longer identifies any online CPUs) then we should update the IRQ
affinity mask to reflect the new CPU set. Failure to do so can
potentially leave /proc/irq/n/smp_affinity identifying only offline
CPUs, which may confuse userspace IRQ balancing daemons.

This patch updates migrate_one_irq to copy the affinity mask when
the interrupt chip returns IRQ_SET_MASK_OK after forcefully changing the
affinity of an interrupt.

Cc: stable@vger.kernel.org
Reported-by: Leif Lindholm <leif.lindholm@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-28 11:01:31 +01:00
Will Deacon
6fa99b7f80 ARM: 7405/1: kexec: call platform_cpu_kill on the killer rather than the victim
When performing a kexec on an SMP system, the secondary cores are stopped
by calling machine_shutdown(), which in turn issues IPIs to offline the
other CPUs. Unfortunately, this isn't enough to reboot the cores into
a new kernel (since they are just executing a cpu_relax loop somewhere
in memory) so we make use of platform_cpu_kill, part of the CPU hotplug
implementation, to place the cores somewhere safe. This function expects
to be called on the killing CPU for each core that it takes out.

This patch moves the platform_cpu_kill callback out of the IPI handler
and into smp_send_stop, therefore ensuring that it executes on the
killing CPU rather than on the victim, matching what the hotplug code
requires.

Cc: stable@vger.kernel.org
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-28 11:01:31 +01:00
Will Deacon
6a1c53124a ARM: 7403/1: tls: remove covert channel via TPIDRURW
TPIDRURW is a user read/write register forming part of the group of
thread registers in more recent versions of the ARM architecture (~v6+).

Currently, the kernel does not touch this register, which allows tasks
to communicate covertly by reading and writing to the register without
context-switching affecting its contents.

This patch clears TPIDRURW when TPIDRURO is updated via the set_tls
macro, which is called directly from __switch_to. Since the current
behaviour makes the register useless to userspace as far as thread
pointers are concerned, simply clearing the register (rather than saving
and restoring it) will not cause any problems to userspace.

Cc: stable@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-28 11:01:30 +01:00
Stephen Boyd
14904927fc ARM: 7401/1: mm: Fix section mismatches
WARNING: vmlinux.o(.text+0x111b8): Section mismatch in reference
from the function arm_memory_present() to the function
.init.text:memory_present()
The function arm_memory_present() references
the function __init memory_present().
This is often because arm_memory_present lacks a __init
annotation or the annotation of memory_present is wrong.

WARNING: arch/arm/mm/built-in.o(.text+0x1edc): Section mismatch
in reference from the function alloc_init_pud() to the function
.init.text:alloc_init_section()
The function alloc_init_pud() references
the function __init alloc_init_section().
This is often because alloc_init_pud lacks a __init
annotation or the annotation of alloc_init_section is wrong.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-28 11:00:16 +01:00
Olof Johansson
6e76538b9e Merge branch 'v3.4-samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
* 'v3.4-samsung-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: SAMSUNG: add missing MMC_CAP2_BROKEN_VOLTAGE capability
  ARM: EXYNOS: Fix compilation error when CONFIG_OF is not defined
  ARM: EXYNOS: Fix resource on dev-dwmci.c
  ARM: S3C24XX: Fix build warning for S3C2410_PM
  ARM: mini2440_defconfig: Fix build error
  ARM: EXYNOS: Fix incorrect initialization of GIC
  ARM: EXYNOS: use 'exynos4-sdhci' as device name for sdhci controllers
2012-04-27 09:40:06 -07:00
Olof Johansson
dadb3660a3 Merge branch 'fixes' of git://github.com/hzhuang1/linux into fixes
* 'fixes' of git://github.com/hzhuang1/linux:
  ARM: PXA2xx: MFP: fix potential direction bug
  ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUT
  arm/sa1100: fix sa1100-rtc memory resource
  ARM: pxa: fix gpio wakeup setting
2012-04-27 09:31:02 -07:00
Igor Grinberg
ef7c7c693b ARM: PXA2xx: MFP: fix potential direction bug
Pins configured as input and have MFP_LPM_DRIVE_* flag set, can have a
wrong output value for some period of time (spike) during the suspend
sequence.
This can happen because the direction of the pins (GPDR) is set by
software and the output level is set by hardware (PGSR) at a later
stage.

Fix the above potential bug by setting the output levels first.
Also save the actual levels of the pins before the suspend and restore
them after the resume, but before the direction settings take place, so
the same bug as described above will not happen in the resume sequence.

Reported-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-04-27 11:14:06 +08:00
Igor Grinberg
a13b878780 ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUT
Pins that have MFP_LPM_KEEP_OUTPUT set and are configured for output
must retain the output state in low power mode.
Currently, the pin direction configuration is overrided with values
in gpdr_lpm[] array and do not obey the MFP_LPM_KEEP_OUTPUT setting.

Fix the above bug and add some documentation to clarify the
MFP_LPM_KEEP_OUTPUT setting purpose.

Reported-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Tested-by: Paul Parsons <lost.distance@yahoo.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-04-27 11:11:50 +08:00
Dmitry Artamonow
9f9d27e3f3 arm/sa1100: fix sa1100-rtc memory resource
DEFINE_RES_MEM() takes the size of resource as a second argument,
not the end address. Passing end address leads to following error
in runtime during device registration:
sa1100-rtc: failed to claim resource 0

Fix it.

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-04-27 11:02:14 +08:00
Robert Jarzmik
b95ace54a2 ARM: pxa: fix gpio wakeup setting
In 3.3, gpio wakeup setting was broken. The call
enable_irq_wake() didn't set up the PXA gpio registers
(PWER, ...) anymore.

Fix it at least for pxa27x. The driver doesn't seem to be
used in pxa25x (weird ...), and the fix doesn't extend to
pxa3xx and pxa95x (which don't have a gpio_set_wake()
available).

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-04-27 10:46:45 +08:00
Linus Torvalds
110a5c8b38 Merge branch 'akpm' (Andrew's patch-bomb)
Merge fixes from Andrew Morton:
 "13 fixes.  The acerhdf patches aren't (really) fixes.  But they've
  been stuck in my tree for up to two years, sent to Matthew multiple
  times and the developers are unhappy."

* emailed from Andrew Morton <akpm@linux-foundation.org>: (13 patches)
  mm: fix NULL ptr dereference in move_pages
  mm: fix NULL ptr dereference in migrate_pages
  revert "proc: clear_refs: do not clear reserved pages"
  drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled
  arch/arm/mach-ux500/mbox-db5500.c: world-writable sysfs fifo file
  hugetlbfs: lockdep annotate root inode properly
  acerhdf: lowered default temp fanon/fanoff values
  acerhdf: add support for new hardware
  acerhdf: add support for Aspire 1410 BIOS v1.3314
  fs/buffer.c: remove BUG() in possible but rare condition
  mm: fix up the vmscan stat in vmstat
  epoll: clear the tfile_check_list on -ELOOP
  mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma
2012-04-26 15:24:45 -07:00
Olof Johansson
b7b617c527 Merge branch 'u300-fixes-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into fixes
* 'u300-fixes-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  ARM: u300: bump all IRQ numbers by one
  ARM: ux300: Fix unimplementable regulation constraints
2012-04-25 21:31:39 -07:00
Vasiliy Kulikov
db7b122cf5 arch/arm/mach-ux500/mbox-db5500.c: world-writable sysfs fifo file
Don't allow everybody to use a modem.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-25 21:26:34 -07:00
Olof Johansson
8ec7c84027 Merge branch 'msm-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm into fixes
* 'msm-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm:
  ARM: msm: Fix gic irqdomain support
2012-04-25 11:08:37 -07:00
Marek Szyprowski
9b4d1cbb13 ARM: SAMSUNG: add missing MMC_CAP2_BROKEN_VOLTAGE capability
Commit 6e8201f57c "mmc: core: add the capability for broken voltage"
introduced a new quirk to indicate that MMC core should ignore voltage
change errors reported by the regulators core. This is required to get
SDHCI working on UniversalC210, NURI and GONI boards again after commit
ceb6143b2d ("mmc: sdhci: fix vmmc handling").

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-24 17:28:12 -07:00
Tushar Behera
6fff5a11fd ARM: EXYNOS: Fix compilation error when CONFIG_OF is not defined
Fixed following compile time error.
arch/arm/mach-exynos/common.c: In function 'exynos5_init_irq':
arch/arm/mach-exynos/common.c:539:2: error: implicit declaration of function 'of_irq_init'
arch/arm/mach-exynos/common.c:539:14: error: 'exynos4_dt_irq_match' undeclared (first use in this function)
arch/arm/mach-exynos/common.c:539:14: note: each undeclared identifier is reported only once for each function it appears in

Cc: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-24 13:50:00 -07:00
Kukjin Kim
ffabec4ef7 ARM: EXYNOS: Fix resource on dev-dwmci.c
Should be EXYNOS4_IRQ_DWMCI instead of IRQ_DWMCI,
and use DEFINE_RES_{MEM,IRQ}.

Reported-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-24 13:50:00 -07:00
Kukjin Kim
7518dde92c ARM: S3C24XX: Fix build warning for S3C2410_PM
warning: (CPU_S3C2440 && CPU_S3C2442) selects S3C2410_PM which has unmet direct dependencies (ARCH_S3C24XX && CPU_S3C2410)
warning: (CPU_S3C2440 && CPU_S3C2442) selects S3C2410_PM which has unmet direct dependencies (ARCH_S3C24XX && CPU_S3C2410)

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-24 13:49:59 -07:00
Arnd Bergmann
18ea1fcd7e ARM: mini2440_defconfig: Fix build error
This is needed to fix mini2440_defconfig after the platform
files have been moved around.

arm-none-linux-gnueabi-ld: no machine record defined
arm-none-linux-gnueabi-ld: no machine record defined
arm-none-linux-gnueabi-ld: no machine record defined
make: *** [.tmp_vmlinux1] Error 1

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-24 13:49:59 -07:00
David Brown
2b7b9a7d6c ARM: msm: Fix gic irqdomain support
As of

    commit 75294957be
    Author: Grant Likely <grant.likely@secretlab.ca>
    Date:   Tue Feb 14 14:06:57 2012 -0700

        irq_domain: Remove 'new' irq_domain in favour of the ppc one

the ARM gic controller uses proper irq domains.  Fix the MSM gic
initialization and DT so that it works again.

Signed-off-by: David Brown <davidb@codeaurora.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
2012-04-23 16:13:27 -07:00
Russell King
354535845f ARM: OMAP: fix DMA vs memory ordering
Using coherent DMA memory with the OMAP DMA engine results in
unpredictable behaviour due to memory ordering issues; as things stand,
there is no guarantee that data written to coherent DMA memory will be
visible to the DMA hardware.

This is because the OMAP dma_write() accessor contains no barriers,
necessary on ARMv6 and above.  The effect of this can be seen in comments
in the OMAP serial driver, which incorrectly talks about cache flushing
for the coherent DMA stuff.

Rather than adding barriers to the accessors, add it in the DMA support
code just before we enable DMA, and just after we disable DMA.  This
avoids having barriers for every DMA register access.

Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 16:54:21 +01:00
Linus Walleij
754aba436b ARM: 7390/1: dts: versatile-pb/ab fix MMC IRQs
The MMCI driver will not work without two IRQs since this is not
flagged as a single-irq variant. Looking through the complex IRQ
definition for the MMCI on the versatile (including an #if 1
statement forcing MMCI IRQ0 to the VIC) this appears to the the
correct IRQ number for both models.

Cc: Niklas Hernaeus <niklas.hernaeus@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 15:46:15 +01:00
Will Deacon
ff9a184cfb ARM: 7400/1: vfp: clear fpscr length and stride bits on entry to sig handler
The ARM PCS mandates that the length and stride bits of the fpscr are
cleared on entry to and return from a public interface. Although signal
handlers run asynchronously with respect to the interrupted function,
the handler itself expects to run as though it has been called like a
normal function.

This patch updates the state mirroring the VFP hardware before entry to
a signal handler so that it adheres to the PCS. Furthermore, we disable
VFP to ensure that we trap on any floating point operation performed by
the signal handler and synchronise the hardware appropriately. A check
is inserted after the signal handler to avoid redundant flushing if VFP
was not used.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 15:44:42 +01:00
Will Deacon
2498814fcb ARM: 7399/1: vfp: move user vfp state save/restore code out of signal.c
The user VFP state must be preserved (subject to ucontext modifications)
across invocation of a signal handler and this is currently handled by
vfp_{preserve,restore}_context in signal.c

Since this code requires intimate low-level knowledge of the VFP state,
this patch moves it into vfpmodule.c.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 15:44:41 +01:00
Will Deacon
ab4d536890 ARM: 7398/1: l2x0: only write to debug registers on PL310
PL310 errata #588369 and #727915 require writes to the debug registers
of the cache controller to work around known problems. Writing these
registers on L220 may cause deadlock, so ensure that we only perform
this operation when we identify a PL310 at probe time.

Cc: stable@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 14:21:52 +01:00
Will Deacon
f154fe9b80 ARM: 7397/1: l2x0: only apply workaround for erratum #753970 on PL310
The workaround for PL310 erratum #753970 can lead to deadlock on systems
with an L220 cache controller.

This patch makes the workaround effective only when the cache controller
is identified as a PL310 at probe time.

Cc: stable@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 14:21:52 +01:00
Will Deacon
f0c4b8d653 ARM: 7396/1: errata: only handle ARM erratum #326103 on affected cores
Erratum #326103 ("FSR write bit incorrect on a SWP to read-only memory")
only affects the ARM 1136 core prior to r1p0. The workaround
disassembles the faulting instruction to determine whether it was a read
or write access on all v6 cores.

An issue has been reported on the ARM 11MPCore whereby loading the
faulting instruction may happen in parallel with that page being
unmapped, resulting in a deadlock due to the lack of TLB broadcasting
in hardware:

http://lists.infradead.org/pipermail/linux-arm-kernel/2012-March/091561.html

This patch limits the workaround so that it is only used on affected
cores, which are known to be UP only. Other v6 cores can rely on the
FSR to indicate the access type correctly.

Cc: stable@vger.kernel.org
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-23 14:21:52 +01:00
Linus Torvalds
e895bd7992 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "Here's my usual Sunday push, just for one revert which PeterZ hollered
  about after last weeks push.  Other than that, all seems strangely
  quiet as far as fixes go in non-platform ARM land at the moment."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus"
2012-04-22 21:19:15 -07:00
Linus Torvalds
8f4f9d4d3c ARM: SoC fixes for 3.4-rc
- at91, ux500, imx, omap and bcmring:
   - at91 fixes for =m driver build issues, irqdomain fixes and config
     dependency fixes
   - ux500 kconfig dependency fixes and a  smp wakeup bugfix
   - imx idle bugfix and build fix due to irq domain changes
   - omap uart pinmux fixes, softreset regression revert and misc fixes
   - bcmring build error regression fix
 
 - ux500 and imx had some small defconfig updates in this branch
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull "ARM: SoC fixes" from Olof Johansson:
 * at91, ux500, imx, omap and bcmring:
  - at91 fixes for =m driver build issues, irqdomain fixes and config
    dependency fixes
  - ux500 kconfig dependency fixes and a  smp wakeup bugfix
  - imx idle bugfix and build fix due to irq domain changes
  - omap uart pinmux fixes, softreset regression revert and misc fixes
  - bcmring build error regression fix

 * ux500 and imx had some small defconfig updates in this branch

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (27 commits)
  ARM: bcmring: fix UART declarations
  ARM: imx: Fix imx5 idle logic bug
  ARM: imx27-dt: Fix build due to removal of irq_domain_add_simple()
  ARM: imx_v4_v5_defconfig: Add support for CONFIG_REGULATOR_FIXED_VOLTAGE
  ARM: OMAP1: DMTIMER: fix broken timer clock source selection
  ARM: OMAP: serial: Fix the ocp smart idlemode handling bug
  ARM: OMAP2+: UART: Fix incorrect population of default uart pads
  ARM: OMAP: sram: fix BUG in dpll code for !PM case
  dmaengine: Kconfig: fix Atmel at_hdmac entry
  USB: gadget/at91_udc: add gpio_to_irq() function to vbus interrupt
  USB: ohci-at91: change annotations for probe/remove functions
  leds-atmel-pwm.c: Make pwmled_probe() __devinit
  ARM: at91: fix at91sam9261ek Ethernet dm9000 irq
  ARM: at91: fix rm9200ek flash size
  ARM: at91: remove empty at91_init_serial function
  ARM: at91: fix typo in at91_pmc_base assembly declaration
  ARM: at91: Export at91_matrix_base
  ARM: at91: Export at91_pmc_base
  ARM: at91: Export at91_ramc_base
  ARM: at91: Export at91_st_base
  ...
2012-04-21 12:45:52 -07:00
Thomas Abraham
5699b0ca05 ARM: EXYNOS: Fix incorrect initialization of GIC
Use the of_irq_init() call to setup the gic which also properly
registers the gic device node pointer with gic irq domain,
without which all interrupt specifier translations for gic fail.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-20 17:53:14 -07:00
Thomas Abraham
8482c81c77 ARM: EXYNOS: use 'exynos4-sdhci' as device name for sdhci controllers
With the addition of platform specific driver data in the sdhci driver
for EXYNOS4 and EXYNOS5, the device name of sdhci controllers on EXYNOS4
and EXYNOS5 are changed accordingly.

Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
[kgene.kim@samsung.com: re-worked on top of v3.4-rc2]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-04-20 17:25:46 -07:00
Linus Walleij
1344500e2d ARM: u300: bump all IRQ numbers by one
Since the VIC was converted to use generic IRQ domains IRQ 0
is silently ignored. This IRQ is used on the U300 so we're
missing it now. Bump all IRQ numbers by one since they are
now decoupled from the hardware IRQ numbers.

Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-20 09:52:58 +02:00
Mark Brown
a102962ffd ARM: ux300: Fix unimplementable regulation constraints
It doesn't make sense to grant permission to change the status of a
regulator that is also set as always on and similarly it doesn't make
sense to allow a driver to change the voltage of a regulator which can
only be set to a single voltage.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2012-04-20 09:52:49 +02:00
Russell King
3cd88f993e Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus"
This reverts commit 9f85550347.

Peter Zijlstra says:
| Argh, how did that ever make it upstream, please drop.
|
| Russell, please make that go away upstream.
|
| Like I said, this is both completely the wrong way to solve, and you're
| so not paying attention, see:
|
|   5fbd036b55
|   2baab4e904
|   e3831edd59
|
| What's even worse:
|
| git describe --contains 9f85550347 --match "v*"
| v3.4-rc3~1^2~3
|
| that nonsense got merged long after those other commits.

Linus Walleij says:
| My bad, was because the initial patch was submitted march 9th before
| these fixes were merged:
| http://marc.info/?l=linux-arm-kernel&m=133159655513844&w=2
|
| It was pending for a while in Russell's patch tracker and I
| rebased it to -rc2 without paying enough attention to recent
| related scheduler fixes ... lesson learned.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-04-19 19:35:10 +01:00
Olof Johansson
6842d4c2a9 Here is another fixes series for AT91 designed for 3.4-rc.
We experienced some issues while compiling some drivers as modules: Joachim has
 corrected several of them. We may reduce this number of exported values by
 reworking some drivers, in the future.
 Some drivers are also modified here, I would like to keep them in the series
 as the modifications are really related with our recent move to irqdomains or
 simply related with compiler annotations.
 I keep dmaengine Kconfig modification in this "fixes" series. The DMA
 driver will not be available for 9x5 SoC family otherwise.
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Merge tag 'at91-fixes' of git://github.com/at91linux/linux-at91 into fixes

Here is another fixes series for AT91 designed for 3.4-rc.

We experienced some issues while compiling some drivers as modules: Joachim has
corrected several of them. We may reduce this number of exported values by
reworking some drivers, in the future.

Some drivers are also modified here, I would like to keep them in the series
as the modifications are really related with our recent move to irqdomains or
simply related with compiler annotations.

I keep dmaengine Kconfig modification in this "fixes" series. The DMA
driver will not be available for 9x5 SoC family otherwise.

* tag 'at91-fixes' of git://github.com/at91linux/linux-at91:
  dmaengine: Kconfig: fix Atmel at_hdmac entry
  USB: gadget/at91_udc: add gpio_to_irq() function to vbus interrupt
  USB: ohci-at91: change annotations for probe/remove functions
  leds-atmel-pwm.c: Make pwmled_probe() __devinit
  ARM: at91: fix at91sam9261ek Ethernet dm9000 irq
  ARM: at91: fix rm9200ek flash size
  ARM: at91: remove empty at91_init_serial function
  ARM: at91: fix typo in at91_pmc_base assembly declaration
  ARM: at91: Export at91_matrix_base
  ARM: at91: Export at91_pmc_base
  ARM: at91: Export at91_ramc_base
  ARM: at91: Export at91_st_base
2012-04-18 21:30:16 -07:00
Olof Johansson
ea53671a70 Merge branch 'fixes-for-arm-soc-20120416' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into fixes
* 'fixes-for-arm-soc-20120416' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  ARM: ux500: update defconfig
  ARM: ux500: Fix unmet direct dependency
  ARM: ux500: wake secondary cpu via resched
2012-04-18 21:28:16 -07:00
Olof Johansson
b462fca45d ARM i.MX misc fixes for -rc
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Merge tag 'v3.4-rc3-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6 into fixes

ARM i.MX misc fixes for -rc

* tag 'v3.4-rc3-imx-fixes' of git://git.pengutronix.de/git/imx/linux-2.6:
  ARM: imx: Fix imx5 idle logic bug
  ARM: imx27-dt: Fix build due to removal of irq_domain_add_simple()
  ARM: imx_v4_v5_defconfig: Add support for CONFIG_REGULATOR_FIXED_VOLTAGE
2012-04-18 21:25:52 -07:00
Olof Johansson
1c2e1fd1ca Fix regression for bad uart muxing and oops when PM is not set.
Revert one softreset regression and few other minor fixes.
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Merge tag 'omap-fixes-for-v3.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fix regression for bad uart muxing and oops when PM is not set.
Revert one softreset regression and few other minor fixes.

* tag 'omap-fixes-for-v3.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP1: DMTIMER: fix broken timer clock source selection
  ARM: OMAP: serial: Fix the ocp smart idlemode handling bug
  ARM: OMAP2+: UART: Fix incorrect population of default uart pads
  ARM: OMAP: sram: fix BUG in dpll code for !PM case
  ARM: OMAP2/3: VENC hwmods: Remove OCPIF_SWSUP_IDLE flag from VENC slave interface
  ARM: OMAP2+: hwmod: Revert "ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status"
  ARM: OMAP2+: hwmod: add softreset delay field and OMAP4 data
  ARM: OMAP1: mux: add missing include
2012-04-18 21:24:00 -07:00
Paul Gortmaker
888073d416 ARM: bcmring: fix UART declarations
This error appeared in the bcmring_defconfig build:

  CC      arch/arm/mach-bcmring/core.o
arch/arm/mach-bcmring/core.c:55: error: macro "AMBA_APB_DEVICE" requires 6 arguments, but only 5 given
arch/arm/mach-bcmring/core.c:55: warning: type defaults to 'int' in declaration of 'AMBA_APB_DEVICE'
arch/arm/mach-bcmring/core.c:56: error: macro "AMBA_APB_DEVICE" requires 6 arguments, but only 5 given
arch/arm/mach-bcmring/core.c:56: warning: type defaults to 'int' in declaration of 'AMBA_APB_DEVICE'
arch/arm/mach-bcmring/core.c:134: error: 'uartA_device' undeclared here (not in a function)
arch/arm/mach-bcmring/core.c:135: error: 'uartB_device' undeclared here (not in a function)
make[2]: *** [arch/arm/mach-bcmring/core.o] Error 1

It appeared as of commit 8ede1ae65e

    "ARM: amba: bcmring: use common amba device initializers"

Note that in include/linux/amba/bus.h we have:
   #define AMBA_APB_DEVICE(name, busid, id, base, irqs, data) ...

There is an a --> A case error in the busid and a missing zero
placeholder for the id field.

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
[olof: reworded patch subject]
Signed-off-by: Olof Johansson <olof@lixom.net>
2012-04-18 21:21:45 -07:00
Robert Lee
4659b7f1fa ARM: imx: Fix imx5 idle logic bug
The imx5_idle() check of the tzic_eanble_wake() return value uses
incorrect (inverted) logic causing all attempt to idle to fail.

Signed-off-by: Robert Lee <rob.lee@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-18 11:52:24 +02:00
Fabio Estevam
de1de1594f ARM: imx27-dt: Fix build due to removal of irq_domain_add_simple()
commit 6b783f7c (irq_domain: Remove irq_domain_add_simple()
replaced irq_domain_add_simple with irq_domain_add_legacy()

Implement this conversion so that imx27-dt can be built again.

Reported-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-18 11:52:24 +02:00
Fabio Estevam
9fd4a50a12 ARM: imx_v4_v5_defconfig: Add support for CONFIG_REGULATOR_FIXED_VOLTAGE
Add support for CONFIG_REGULATOR_FIXED_VOLTAGE.

Without this option the mx27_3ds cannot have the external Ethernet functional
due to the need of smsc regulators.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-04-18 11:52:23 +02:00