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Driver for standby GPIO controller of APM X-Gene SoCs on arm64.
Signed-off-by: Y Vo <yvo@apm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Current sx150x gpio expander driver doesn't support
DTS. Now we added dts support for this driver.
Signed-off-by: Wei Chen <Wei.Chen@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Add set_multiple functions to the generic driver for memory-mapped GPIO
controllers to improve performance when setting multiple outputs
simultaneously.
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Commit ffe4770b9b3483f74 ("gpio-amd8111: check ioport_map return value")
adds the error check on ioport_map(). It doesnt release the requested region.
On failure this patch release the region that has requested before.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Reported-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Include linux/slab.h to fix following compilation error.
drivers/gpio/gpio-ge.c: In function ‘gef_gpio_probe’:
drivers/gpio/gpio-ge.c:95:2: error: implicit declaration of function ‘kfree’ [-Werror=implicit-function-declaration]
kfree(bgc->gc.label);
Signed-off-by: Kamlakant Patel <kamlakant.patel@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch converts GE GPIO driver to use basic_mmio_gpio
generic library.
Signed-off-by: Kamlakant Patel <kamlakant.patel@linaro.org>
Acked-by: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Fix the coding style issue by adding a blank line after declaration
Signed-off-by: Mohammad Jamal <md.jamalmohiuddin@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch was derived from next one:
"gpio: fix pca953x set_type 'scheduling while atomic' bug".
After adding entry that consumes max732x GPIO as interrupt line to dts
file, deadlock appears somewhere in max732x probe function.
Deadlock caught by lockdep (from kernel log):
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< cut here >>>>>>>>>>>>>>>>>>>>>>>>>>>
[ 0.473419] ======================================================
[ 0.473419] [ INFO: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected ]
[ 0.473449] 3.x.xx-xxxxx-xxxxxxxx-dirty #2 Tainted: G W
[ 0.473449] ------------------------------------------------------
[ 0.473449] swapper/0/1 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
[ 0.473449] (&lock->wait_lock){+.+...}, at: [<c072e350>] rt_mutex_trylock+0xc/0x74
[ 0.473480]
[ 0.473480] and this task is already holding:
[ 0.473510] (&chip->lock){......}, at: [<c0314514>] max732x_gpio_set_value+0x2c/0xa4
[ 0.473541] which would create a new lock dependency:
[ 0.473541] (&chip->lock){......} -> (&lock->wait_lock){+.+...}
...
[ 0.474273] *** DEADLOCK ***
[ 0.474273]
[ 0.474273] 5 locks held by swapper/0/1:
[ 0.474273] #0: (&__lockdep_no_validate__){......}, at: [<c03b2328>] __driver_attach+0x48/0x98
[ 0.474304] #1: (&__lockdep_no_validate__){......}, at: [<c03b2338>] __driver_attach+0x58/0x98
[ 0.474334] #2: (&chip->irq_lock){+.+...}, at: [<c0313e3c>] max732x_irq_bus_lock+0x14/0x20
[ 0.474365] #3: (&irq_desc_lock_class){-.....}, at: [<c00a65a4>] __irq_get_desc_lock+0x48/0x88
[ 0.474365] #4: (&chip->lock){......}, at: [<c0314514>] max732x_gpio
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< cut here >>>>>>>>>>>>>>>>>>>>>>>>>>>
Signed-off-by: Semen Protsenko <semen.protsenko@globallogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Signed-off-by: Semen Protsenko <semen.protsenko@globallogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Signed-off-by: Semen Protsenko <semen.protsenko@globallogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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X86 Kconfig symbol is X86, not ARCH_X86.
Fixes: c586b3075d5b47d8 (gpio/xilinx: Add support for X86 Arch)
Reported-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Switch the R-Car Gen2 GPIO driver to use the gpiolib irqchip helpers.
While doing this also make sure that gpiochip_irqchip_add() is called
after the gpiochip itself is registered, as required.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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If the call to devm_kzalloc() fails, nothing must be cleant up.
This was missed before because gpio_rcar_probe() had a "return"
statement after the first "goto err0".
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Fixes: df0c6c80232f2ad4 ("gpio: rcar: Add minimal runtime PM support")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Ensure that when there is an error during probe that the gpiochip is
removed and the generic irq chip is removed.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Wrap some long lines.
Prefer seq_puts() over seq_printf().
space to tab conversions.
Spelling error fix.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Checkpatch complains, and probably with good reason that we should use
const char const * for the static constant array that never gets
changed.
Signed-off-by: Olliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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ioport_map() may fail. Its safe to check the return value.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use resource managed APIs to simplify the code a bit.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use resource_size to fix off-by-one resource size calculation
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Fix a copy-paste bug.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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"gc->ngpio" is a number between 1 and GRGPIO_MAX_NGPIO. If "offset" is
GRGPIO_MAX_NGPIO then we're going one step beyond the end of the
priv->lirqs[] array.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This device is only used from the device tree, and the startup()
and remove() callbacks are not used anywhere in the kernel, so
retire them and the pdata altogether.
Cc: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use devm_* APIs to simplify the code a bit.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Use the newly created of_mm_gpiochip_remove function for cleaning up
of_mm_gpiochip_add
Suggested-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Create counterpart of of_mm_gpiochip_add(). This way the modules that
can be removable do not duplicate the cleanup code.
Suggested-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Currently, we had two gpio chips on cores configured as dual.
This lead to mapping the same memory region twice and duplicating the
init and remove code.
This patch creates a single gpiochip for single and dual cores.
Suggested-by: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Some documentation were not following the kernel-doc format.
Backporting patch from Xilinx git repository.
Suggested-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Core can be accessed via PCIe on X86 platform.
This patch also allows the driver to be used as module.
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This way we do not need to transverse the device tree manually and we
support hot plugged devices.
Also Implement remove callback so the driver can be unloaded
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Instead of calculating the register offset per call, pre-calculate it on
probe time.
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Intel Quark X1000 provides a total of 16 GPIOs. The GPIOs are split between
the legacy I/O bridge and the GPIO controller.
GPIO-SCH is the GPIO pins on legacy bridge for Intel Quark SoC.
Intel Quark X1000 has 2 GPIOs powered by the core power well and 6 from
the suspend power well.
This piece of work is derived from Dan O'Donovan's initial work for Quark
X1000 enabling.
Signed-off-by: Chang Rebecca Swee Fun <rebecca.swee.fun.chang@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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semtech has two series of sx150x gpio expanders: sx150x-456 and
sx150x-789.
The current gpio-150x driver in linux only support sx1508 and
sx1509.
We added sx1506 support code into this driver.
Signed-off-by: Wei Chen <Wei.Chen@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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The sx150x gpio driver used a loop to set liner irq map for gpio pins.
Now we use the irq domain to rebuild this irq mappig and make sure the
codes are still compatible to old users.
this patch also adds IRQF_ONESHOT flag to fix the IRQ flooding issues.
Signed-off-by: Wei Chen <Wei.Chen@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
[Make Kconfig select GPIOLIB_IRQCHIP]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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This patch converts MOXART GPIO driver to use basic_mmio_gpio
generic library.
Signed-off-by: Kamlakant Patel <kamlakant.patel@linaro.org>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Tested-by: Jonas Jensen <jonas.jensen@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro:
"An embarrassing bug in lustre patches from this cycle ;-/"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
[regression] braino in "lustre: use is_root_inode()"
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In one of the places (ll_md_blocking_ast()) we had open-coded
!is_root_inode(inode) and replaced it with is_root_inode(inode).
See the last chunk of f76c23:
- inode != inode->i_sb->s_root->d_inode)
+ is_root_inode(inode))
should've been
+ !is_root_inode(inode))
obviously...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull drm fixes from Dave Airlie:
"Xmas fixes pull:
core:
one atomic fix, revert the WARN_ON dumb buffers patch.
agp:
fixup Dave J.
nouveau:
fix 3.18 regression for old userspace
tegra fixes:
vblank and iommu fixes
amdkfd:
fix bugs shown by testing with userspace, init apertures once
msm:
hdmi fixes and cleanup
i915:
misc fixes
There is also a link ordering fix that I've asked to be cc'ed to you,
putting iommu before gpu, it fixes an issue with amdkfd when things
are all in the kernel, but I didn't like sending it via my tree
without discussion.
I'll probably be a bit on/off for a few weeks with pulls now, due to
holidays and LCA, so don't be surprised if stuff gets a bit backed up,
and things end up a bit large due to lag"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
Revert "drm/gem: Warn on illegal use of the dumb buffer interface v2"
agp: Fix up email address & attributions in AGP MODULE_AUTHOR tags
nouveau: bring back legacy mmap handler
drm/msm/hdmi: rework HDMI IRQ handler
drm/msm/hdmi: enable regulators before clocks to avoid warnings
drm/msm/mdp5: update irqs on crtc<->encoder link change
drm/msm: block incoming update on pending updates
drm/atomic: fix potential null ptr on plane enable
drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
drm/msm: Deletion of unnecessary checks before two function calls
drm/tegra: dc: Select root window for event dispatch
drm/tegra: gem: Use the proper size for GEM objects
drm/tegra: gem: Flush buffer objects upon allocation
drm/tegra: dc: Fix a potential race on page-flip completion
drm/tegra: dc: Consistently use the same pipe
drm/irq: Add drm_crtc_vblank_count()
drm/irq: Add drm_crtc_handle_vblank()
drm/irq: Add drm_crtc_send_vblank_event()
drm/i915: Disable PSMI sleep messages on all rings around context switches
drm/i915: Force the CS stall for invalidate flushes
...
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Pull ipmi driver bugfixes from Corey Minyard:
"Fix two bugs:
One that lockdep turned up, I didn't go far enough with cleanup of
attributes for IPMI. This has been there a long time; my previous fix
of this didn't fix all the attributes.
One fix for some arches that need an explicit linux/ctype.h for
isspace()"
* tag 'for-linus-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi: Fix compile issue with isspace()
ipmi: Finish cleanup of BMC attributes
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This reverts commit 355a70183848f21198e9f6296bd646df3478a26d.
This had some bad side effects under normal operation, and should
have been dropped earlier.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://people.freedesktop.org/~gabbayo/linux into drm-fixes
- Display MEC fw version in topology. Without this, the HSA userspace
stack is broken.
- Init apertures information only once per process
* tag 'amdkfd-fixes-2014-12-23' of git://people.freedesktop.org/~gabbayo/linux:
amdkfd: init aperture once per process
amdkfd: Display MEC fw version in topology node
drm/radeon: Add implementation of get_fw_version
drm/amd: Add get_fw_version to kfd-->kgd interface
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- Remove soon-to-be-dead @redhat address.
- Jeff Hartmann wrote the bulk of the original backend code, and should
at least get a mention in the MODULE_AUTHOR for backend.o
- Various people at Intel have done a lot more work than myself on the
intel-* drivers, so again, mention that.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
"Thre stable fixes and one fix for a regression introduced during 3.19
merge:
- Fix inability to discard used space when the thin-pool target is in
out-of-data-space mode and also transition the thin-pool back to
write mode once free space is made available.
- Fix DM core bio-based end_io bug that prevented proper
post-processing of the error code returned from the block layer.
- Fix crash in DM thin-pool due to thin device being added to the
pool's active_thins list before properly initializing the thin
device's refcount"
* tag 'dm-3.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: fix missed error code if .end_io isn't implemented by target_type
dm thin: fix crash by initializing thin device's refcount and completion earlier
dm thin: fix missing out-of-data-space to write mode transition if blocks are released
dm thin: fix inability to discard blocks when in out-of-data-space mode
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git://people.freedesktop.org/~tagr/linux into drm-fixes
drm/tegra: Fixes for v3.19-rc1
This is a set of fixes for two regressions and one bug in the IOMMU
mapping code. It turns out that all of these issues turn up primarily
on Tegra30 hardware. The IOMMU mapping bug only manifests on buffers
that aren't multiples of the page size. I happened to be testing HDMI
with 1080p while writing the code and framebuffers for that happen to
fit exactly within 2025 pages of 4 KiB each.
One of the regressions is caused by the IOMMU code allocating pages from
shmem which can have associated cache lines. If the pages aren't flushed
then these cache lines may be flushed later on and cause framebuffer
corruption. I'm not sure why I didn't see this before. Perhaps the board
that I was using had enough RAM so that the pages shmem would hand out
had a better chance of being unused. Or maybe I didn't look too closely.
The fix for this is to fake up an SG table so that it can be passed to
the DMA API. Ideally this would use drm_clflush_*(), but implementing
that for ARM causes DRM to fail to build as a module since some of the
low-level cache maintenance functions aren't exported. Hopefully we can
get a suitable API exported on ARM for the next release.
The second regression is caused by a mismatch between the hardware pipe
number and the CRTC's DRM index. These were used inconsistently, which
could cause one code location to call drm_vblank_get() with a different
pipe than the corresponding drm_vblank_put(), thereby causing the
reference count to become unbalanced. Alexandre also reported a possible
race condition related to this, which this series also fixes.
* tag 'drm/tegra/for-3.19-rc1-fixes' of git://people.freedesktop.org/~tagr/linux:
drm/tegra: dc: Select root window for event dispatch
drm/tegra: gem: Use the proper size for GEM objects
drm/tegra: gem: Flush buffer objects upon allocation
drm/tegra: dc: Fix a potential race on page-flip completion
drm/tegra: dc: Consistently use the same pipe
drm/irq: Add drm_crtc_vblank_count()
drm/irq: Add drm_crtc_handle_vblank()
drm/irq: Add drm_crtc_send_vblank_event()
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git://anongit.freedesktop.org/drm-intel into drm-fixes
misc i915 fixes.
* tag 'drm-intel-next-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Disable PSMI sleep messages on all rings around context switches
drm/i915: Force the CS stall for invalidate flushes
drm/i915: Invalidate media caches on gen7
drm/i915: sanitize RPS resetting during GPU reset
drm/i915: move RPS PM_IER enabling to gen6_enable_rps_interrupts
drm/i915: vlv: fix IRQ masking when uninstalling interrupts
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git://anongit.freedesktop.org/drm-intel into drm-fixes
Yeah a pull for one patch is a bit overkill but I started to assemble the
various patches for 3.20 in a branch for atomic props/ioctl and didn't
realize that this bugfix here at the beginnning of the branch should be in
3.19 (because msm is using the helpers arleady). So if you'd merge we'd
have it twice or or I need to shuffle branches again. Can do if you want.
* tag 'topic/atomic-fixes-2014-12-17' of git://anongit.freedesktop.org/drm-intel:
drm/atomic: fix potential null ptr on plane enable
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git://people.freedesktop.org/~robclark/linux into drm-fixes
A few msm fixes for 3.19:
* hdmi regulators fix
* hdmi fix for spurious HPD interrupts
* fix for sync atomic update after async update (which could show
up with a setcrtc following a pageflip)
* couple little Coccinelle cleanups
* 'msm-fixes-3.19' of git://people.freedesktop.org/~robclark/linux:
drm/msm/hdmi: rework HDMI IRQ handler
drm/msm/hdmi: enable regulators before clocks to avoid warnings
drm/msm/mdp5: update irqs on crtc<->encoder link change
drm/msm: block incoming update on pending updates
drm/msm: Deletion of unnecessary checks before the function call "release_firmware"
drm/msm: Deletion of unnecessary checks before two function calls
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nouveau userspace back at 1.0.1 used to call the X server
DRIOpenDRMMaster interface even for DRI2 (doh!), this attempts
to map the sarea and fails if it can't.
Since 884c6dabb0eafe7227f099c9e78e514191efaf13 from Daniel,
this fails, but only ancient drivers would see it.
Revert the nouveau bits of that fix.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: <stable@vger.kernel.org> # 3.18
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Some arches don't get ctypes.h included from these includes, so add
it explicitly.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
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The previous cleanup of BMC attributes left a few holes, and if
you run with lockdep debugging with a BMC with the proper attributes,
you could get a warning.
This patch removes all the unused attributes from the BMC structure,
since they are all declared in the .data section now. It makes
the attributes all static. It fixes the referencing of the
attributes in a couple of cases that dynamically added the files
depending on BMC information.
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Huang Ying <ying.huang@intel.com>
Tested-by: Alexei Starovoitov <ast@plumgrid.com>
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