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533,133 commits

Author SHA1 Message Date
Javier Martinez Canillas
f3caa529c6 ARM: multi_v7_defconfig: Enable max77802 regulator, rtc and clock drivers
The Maxim max77802 Power Management IC is used on many Exynos machines.
Besides a bunch of regulators, this chip has a Real-Time-Clock (RTC)
and 2-channel 32kHz clock outputs.

Enable the kernel config options to have the drivers for these devices
built as a module.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
[kgene@kernel.org: removing useless REGULATOR_MAX77802 config]
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-05-22 17:13:06 +02:00
Javier Martinez Canillas
eb2209b4a9 ARM: multi_v7_defconfig: Enable support for Samsung S3C64XX SPI
Build the spi-s3c64xx driver as a module to have support for
the SPI controller in several Samsung SoCs.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-05-22 17:12:54 +02:00
Yijing Wang
d0751b98df PCI: Add dev->has_secondary_link to track downstream PCIe links
A PCIe Port is an interface to a Link.  A Root Port is a PCI-PCI bridge in
a Root Complex and has a Link on its secondary (downstream) side.  For
other Ports, the Link may be on either the upstream (closer to the Root
Complex) or downstream side of the Port.

The usual topology has a Root Port connected to an Upstream Port.  We
previously assumed this was the only possible topology, and that a
Downstream Port's Link was always on its downstream side, like this:

                  +---------------------+
  +------+        |          Downstream |
  | Root |        | Upstream       Port +--Link--
  | Port +--Link--+ Port                |
  +------+        |          Downstream |
                  |                Port +--Link--
                  +---------------------+

But systems do exist (see URL below) where the Root Port is connected to a
Downstream Port.  In this case, a Downstream Port's Link may be on either
the upstream or downstream side:

                  +---------------------+
  +------+        |            Upstream |
  | Root |        | Downstream     Port +--Link--
  | Port +--Link--+ Port                |
  +------+        |          Downstream |
                  |                Port +--Link--
                  +---------------------+

We can't use the Port type to determine which side the Link is on, so add a
bit in struct pci_dev to keep track.

A Root Port's Link is always on the Port's secondary side.  A component
(Endpoint or Port) on the other end of the Link obviously has the Link on
its upstream side.  If that component is a Port, it is part of a Switch or
a Bridge.  A Bridge has a PCI or PCI-X bus on its secondary side, not a
Link.  The internal bus of a Switch connects the Port to another Port whose
Link is on the downstream side.

[bhelgaas: changelog, comment, cache "type", use if/else]
Link: http://lkml.kernel.org/r/54EB81B2.4050904@pobox.com
Link: https://bugzilla.kernel.org/show_bug.cgi?id=94361
Suggested-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-05-22 09:59:33 -05:00
Christoph Hellwig
5f1b670d0b block, dm: don't copy bios for request clones
Currently dm-multipath has to clone the bios for every request sent
to the lower devices, which wastes cpu cycles and ties down memory.

This patch instead adds a new REQ_CLONE flag that instructs req_bio_endio
to not complete bios attached to a request, which we set on clone
requests similar to bios in a flush sequence.  With this change I/O
errors on a path failure only get propagated to dm-multipath, which
can then either resubmit the I/O or complete the bios on the original
request.

I've done some basic testing of this on a Linux target with ALUA support,
and it survives path failures during I/O nicely.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:58:57 -06:00
Mike Snitzer
326e1dbb57 block: remove management of bi_remaining when restoring original bi_end_io
Commit c4cf5261 ("bio: skip atomic inc/dec of ->bi_remaining for
non-chains") regressed all existing callers that followed this pattern:
 1) saving a bio's original bi_end_io
 2) wiring up an intermediate bi_end_io
 3) restoring the original bi_end_io from intermediate bi_end_io
 4) calling bio_endio() to execute the restored original bi_end_io

The regression was due to BIO_CHAIN only ever getting set if
bio_inc_remaining() is called.  For the above pattern it isn't set until
step 3 above (step 2 would've needed to establish BIO_CHAIN).  As such
the first bio_endio(), in step 2 above, never decremented __bi_remaining
before calling the intermediate bi_end_io -- leaving __bi_remaining with
the value 1 instead of 0.  When bio_inc_remaining() occurred during step
3 it brought it to a value of 2.  When the second bio_endio() was
called, in step 4 above, it should've called the original bi_end_io but
it didn't because there was an extra reference that wasn't dropped (due
to atomic operations being optimized away since BIO_CHAIN wasn't set
upfront).

Fix this issue by removing the __bi_remaining management complexity for
all callers that use the above pattern -- bio_chain() is the only
interface that _needs_ to be concerned with __bi_remaining.  For the
above pattern callers just expect the bi_end_io they set to get called!
Remove bio_endio_nodec() and also remove all bio_inc_remaining() calls
that aren't associated with the bio_chain() interface.

Also, the bio_inc_remaining() interface has been moved local to bio.c.

Fixes: c4cf5261 ("bio: skip atomic inc/dec of ->bi_remaining for non-chains")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:58:55 -06:00
Stefan Agner
4737130e67 ARM: add ARM_SINGLE_ARMV7M in ARMv7-M defconfigs
Select ARM_SINGLE_ARMV7M in defconfigs of the converted ARMv7-M
platforms.

[arnd: moved the efm32_defconfig change to the patch that
originally introduces the symbol, to avoid intermittent regression]

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-05-22 16:58:03 +02:00
Stefan Agner
499f164020 ARM: use ARM_SINGLE_ARMV7M for ARMv7-M platforms
Use the new config symbol ARM_SINGLE_ARMV7M which groups config
symbols used by modern ARMv7-M platforms. This allows supporting
multiple ARMv7-M platforms in one kernel image. However, a common
kernel image requires the combined platforms to share the same
main memory layout to be bootable.

Signed-off-by: Stefan Agner <stefan@agner.ch>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Joachim Eastwood <manabian@gmail.com>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-05-22 16:53:12 +02:00
Sakari Ailus
247de69434 PCI: Add function 1 DMA alias quirk for Marvell 9120
Marvell 9120 SATA controller has the same issue as a number of others, so
use the same quirk for this one.  The other quirks were added by
cc346a4714 ("PCI: Add function 1 DMA alias quirk for Marvell devices").

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
2015-05-22 09:50:41 -05:00
Arnd Bergmann
993198a641 ARM: zx: fix building with CONFIG_THUMB2_KERNEL
The newly added zx platform causes a build error when
CONFIG_THUMB2_KERNEL is enabled:

arch/arm/mach-zx/headsmp.S:16: Error: invalid immediate for address calculation (value = 0x00000004)

I'm assuming that the ROM code that is calling these entry
points runs in ARM mode, so there would be another problem
in the same file, and we can solve both problems at once
by adding a '.arm' statement that will make zx_resume_jump
and zx_secondary_startup both be built as ARM code.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jun Nie <jun.nie@linaro.org>
Tested-by: Jun Nie <jun.nie@linaro.org>
2015-05-22 16:45:54 +02:00
Robert Jarzmik
bd7413aef8 ARM: pxa: pxa_cplds: signedness bug in probe
"base_irq" needs to be signed for the error handling to work.  Also we
can remove the initialization because we re-assign it later.

Fixes: aa8d6b73ea ('ARM: pxa: pxa_cplds: add lubbock and mainstone IO')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-05-22 16:41:20 +02:00
Arnd Bergmann
d7c82daf4f First batch of cleanup for 4.2:
- use syscon in the ata and cf drivers to configure the SMC and drop
  sam9_smc.c
  - switch the at91rm9200 memory controller to syscon
  - remove last useless headers
  - remove now useless Makefile.boot
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Merge tag 'at91-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux into next/cleanup

Merge "First batch of cleanup for 4.2" from Alexandre Belloni:

 - use syscon in the ata and cf drivers to configure the SMC and drop
 sam9_smc.c
 - switch the at91rm9200 memory controller to syscon
 - remove last useless headers
 - remove now useless Makefile.boot

* tag 'at91-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
  ARM: at91: remove useless Makefile.boot
  ARM: at91: remove at91rm9200_sdramc.h
  ARM: at91: remove mach/at91_ramc.h and mach/at91rm9200_mc.h
  ARM: at91/pm: use the atmel-mc syscon defines
  pcmcia: at91_cf: Use syscon to configure the MC/smc
  ARM: at91: declare the at91rm9200 memory controller as a syscon
  mfd: syscon: Add Atmel MC (Memory Controller) registers definition
  ARM: at91: drop sam9_smc.c
  ata: at91: use syscon to configure the smc
2015-05-22 16:39:20 +02:00
Arnd Bergmann
2ed2558087 Clean-up for omaps for v4.2 merge window:
Drop more omap3 legacy board-*.c files for v4.2. This time we're
 dropping the board files for beagle, overo and cm-t35.
 
 The reason for dropping these now rather than later is that now
 we can simply revert the patches in case of unexpected issues as
 we are not dropping any platform data at this point.
 
 This leaves us with only the following board-*.c files:
 
 BOARD                   REASON NEEDED
 board-ldp.c             Still used in RMKs boot test system
 board-omap3logic.c      Getting a .dts file for v4.2
 board-omap3pandora.c    Got a .dts file for v4.1
 board-rx51-*.c          Needs /proc/atags support for user space
 
 I'm hoping we can drop the remaining board-*.c for v4.3 merge
 window, then keep the platform data around for one more merge
 window in case of reverting needed, then drop the platform data
 too for v4.4 if no issues needing reverting are found.
 
 Also, few patches to clean-up the usage of Linux generic
 macros:
 
 - Use define for console loglevel
 
 - Use const for struct irq_domain_ops
 
 - Use PTR_ERR_OR_ZERO instead of PTR_RET
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Merge tag 'omap-for-v4.2/clean' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/cleanup

Merge "Clean-up for omaps for v4.2 merge window" from Tony Lindgren:

Drop more omap3 legacy board-*.c files for v4.2. This time we're
dropping the board files for beagle, overo and cm-t35.

The reason for dropping these now rather than later is that now
we can simply revert the patches in case of unexpected issues as
we are not dropping any platform data at this point.

This leaves us with only the following board-*.c files:

BOARD                   REASON NEEDED
board-ldp.c             Still used in RMKs boot test system
board-omap3logic.c      Getting a .dts file for v4.2
board-omap3pandora.c    Got a .dts file for v4.1
board-rx51-*.c          Needs /proc/atags support for user space

I'm hoping we can drop the remaining board-*.c for v4.3 merge
window, then keep the platform data around for one more merge
window in case of reverting needed, then drop the platform data
too for v4.4 if no issues needing reverting are found.

Also, few patches to clean-up the usage of Linux generic
macros:

- Use define for console loglevel

- Use const for struct irq_domain_ops

- Use PTR_ERR_OR_ZERO instead of PTR_RET

* tag 'omap-for-v4.2/clean' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  mach-omap2: Remove use of deprecated marco, PTR_RET in devices.c
  ARM: OMAP2+: Remove calls to deprecacted marco,PTR_RET in the files,fb.c and pmu.c
  ARM: OMAP2+: Constify irq_domain_ops
  ARM: OMAP2+: use symbolic defines for console loglevels instead of numbers
  ARM: OMAP2+: Remove legacy booting support for Beagleboards
  ARM: OMAP2+: Remove legacy booting support for Overo
  ARM: OMAP2+: Remove legacy booting support for cm-t35
2015-05-22 16:37:35 +02:00
Christoph Hellwig
d29ec8241c nvme: submit internal commands through the block layer
Use block layer queues with an internal cmd_type to submit internally
generated NVMe commands.  This both simplifies the code a lot and allow
for a better structure.  For example now the LighNVM code can construct
commands without knowing the details of the underlying I/O descriptors.
Or a future NVMe over network target could inject commands, as well as
could the SCSI translation and ioctl code be reused for such a beast.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:37:20 -06:00
Christoph Hellwig
772ce43559 nvme: fail SCSI read/write command with unsupported protection bit
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:44 -06:00
Christoph Hellwig
9085176848 nvme: report the DPOFUA in MODE_SENSE
NVMe device always support the FUA bit, and the SCSI translations
accepts the DPO bit, which doesn't have much of a meaning for us.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:42 -06:00
Christoph Hellwig
cbbb7a2ec6 nvme: simplify and cleanup the READ/WRITE SCSI CDB parsing code
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:40 -06:00
Christoph Hellwig
3726897efd nvme: first round at deobsfucating the SCSI translation code
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:38 -06:00
Christoph Hellwig
e61b0a86ca nvme: fix scsi translation error handling
Erorr handling for the scsi translation was completely broken, as there
were two different positive error number spaces overlapping.  Fix this
up by removing one of them, and centralizing the generation of the other
positive values in a single place.  Also fix up a few places that didn't
handle the NVMe error codes properly.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:36 -06:00
Christoph Hellwig
b90c48d0c1 nvme: split nvme_trans_send_fw_cmd
This function handles two totally different opcodes, so split it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:34 -06:00
Christoph Hellwig
e75ec752d7 nvme: store a struct device pointer in struct nvme_dev
Most users want the generic device, so store that in struct nvme_dev
instead of the pci_dev.  This also happens to be a nice step towards
making some code reusable for non-PCI transports.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:33 -06:00
Christoph Hellwig
f705f837c5 nvme: consolidate synchronous command submission helpers
Note that we keep the unused timeout argument, but allow callers to
pass 0 instead of a timeout if they want the default.  This will allow
adding a timeout to the pass through path later on.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
2015-05-22 08:36:31 -06:00
Arnd Bergmann
ac0b20926d Add support for CONFIG_SPARSE_IRQ for omap1. This takes us a bit closer
to making omap1 support multiarch. After this series we still need to
 make omap1 use the common clock framework and fix up the drivers to not
 rely on includes from mach and plat directories.
 
 Note that this branch depends on a GPIO driver fix in v4.1-rc3
 d2d05c65c4 ("gpio: omap: Fix regression for MPUIO interrupts").
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Merge tag 'omap-for-v4.2/omap1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

Merge fixed up omap1 sparse irq support for v4.2 from Tony Lindgren:

Add support for CONFIG_SPARSE_IRQ for omap1. This takes us a bit closer
to making omap1 support multiarch. After this series we still need to
make omap1 use the common clock framework and fix up the drivers to not
rely on includes from mach and plat directories.

Note that this branch depends on a GPIO driver fix in v4.1-rc3
d2d05c65c4 ("gpio: omap: Fix regression for MPUIO interrupts").

* tag 'omap-for-v4.2/omap1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP1: Fix section mismatch warnings for omap_cfg_reg
  ARM: OMAP1: Fix randconfig builds if ARCH_OMAP15XX not selected
  ARM: OMAP1: Change interrupt numbering for sparse IRQ
  ARM: omap1: Switch to use MULTI_IRQ
  ARM: OMAP1: Switch to use generic irqchip in preparation for sparse IRQ
  ARM: OMAP1: Move UART defines to prepare for sparse IRQ
2015-05-22 16:34:06 +02:00
Arnd Bergmann
a4526915b6 Merge tag 'arm-soc/for-4.2/soc-take2' of http://github.com/broadcom/stblinux into next/soc
Merge mach-bcm changes from Florian Fainelli:

This pull request contains the following changes:

- Rafal adds an additional fault code to be ignored by the kernel on BCM5301X SoC

- BCM63138 SMP support which:
	* common code to control the PMB bus, to be shared with a reset
	  controller driver in drivers/reset
	* secondary CPU initialization sequence using PMB helpers
	* small changes suggested by Russell King to allow platforms to disable VFP

* tag 'arm-soc/for-4.2/soc-take2' of http://github.com/broadcom/stblinux:
  ARM: BCM63xx: Add SMP support for BCM63138
  ARM: vfp: Add vfp_disable for problematic platforms
  ARM: vfp: Add include guards
  ARM: BCM63xx: Add secondary CPU PMB initialization sequence
  ARM: BCM63xx: Add Broadcom BCM63xx PMB controller helpers
  ARM: BCM5301X: Ignore another (BCM4709 specific) fault code
2015-05-22 16:32:02 +02:00
Daniel Stone
e2f5d2ea47 drm/mode: Add user blob-creation ioctl
Add an ioctl which allows users to create blob properties from supplied
data. Currently this only supports modes, creating a drm_display_mode from
the userspace drm_mode_modeinfo.

v2: Removed size/type checks.
    Rebased on new patches to allow error propagation from create_blob,
    as well as avoiding double-allocation.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@intel.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:28 +02:00
Daniel Stone
10e8cb7e79 drm: Return error value from blob creation
Change drm_property_create_blob to return an ERR_PTR-encoded error on
failure, so we can pass the failure reason down.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@intel.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:22 +02:00
Daniel Stone
99531d9bb7 drm: Allow creating blob properties without copy
Make the data parameter to drm_property_create_blob optional; if
omitted, the copy will be skipped and the data will be empty.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@intel.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:21 +02:00
Daniel Stone
934a8a899a drm/mode: Unstatic kernel-userspace mode conversion
Move the drm_display_mode <-> drm_mode_modeinfo conversion functions
from drm_crtc.c to drm_modes.c, and make them non-static so that others
can use them.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:21 +02:00
Daniel Stone
7dec9a9648 drm/mode: Validate modes inside drm_crtc_convert_umode
The only user of convert_umode was also performing mode validation, so
do that in the same place.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:20 +02:00
Daniel Stone
9f658b7b62 drm/crtc_helper: Replace open-coded CRTC state helpers
Rather than open-coding our own CRTC state helpers, use the atomic helpers
added in f5e7840b0c, and make our freeing behaviour consistent as well.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Tested-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:20 +02:00
Daniel Stone
f102c16ebb drm: kerneldoc fixes for blob properties
Change '@param foo' to '@foo:' to fit kerneldoc style.

672cb1d6ae mistakenly added an extra parameter to the kerneldoc for
drm_property_unreference_blob which wasn't actually present.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2015-05-22 16:18:19 +02:00
Takashi Iwai
181a152a09 Merge branch 'topic/hdmi' into for-next 2015-05-22 16:04:45 +02:00
Russell King
9203dd016a ALSA: pcm: add IEC958 channel status helper
Add a helper to create the IEC958 channel status from an ALSA
snd_pcm_runtime structure, taking account of the sample rate and
sample size.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviwed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-22 16:01:47 +02:00
Russell King
838d1631b7 ALSA: pcm: add DRM ELD helper
Add a helper for the EDID like data structure, which is typically passed
from a HDMI adapter to its associated audio driver.  This informs the
audio driver of the capabilities of the attached HDMI sink.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-05-22 16:01:44 +02:00
Arnd Bergmann
672bfdaa31 usb: renesas_usbhs: avoid uninitialized variable use
After the renesas_usbhs driver is enabled in ARM multi_v7_defconfig,
we now get a new warning:

renesas_usbhs/mod.c: In function 'usbhs_interrupt':
renesas_usbhs/mod.c:246:7: warning: 'intenb1' may be used uninitialized in this function [-Wmaybe-uninitialized]

gcc correctly points to a problem here, for the case that the
device is in host mode, we use the intenb1 variable without
having assigned it first. The state->intsts1 has a similar
problem, but gcc cannot know that.

This avoids the problem by initializing both sides of the
comparison to zero when we don't read them from the respective
registers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 88a25e02f3 ("usb: renesas_usbhs: Add access control for INTSTS1 and INTENB1 register")
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-05-22 08:52:16 -05:00
Kuninori Morimoto
02299d9875 ASoC: rsnd: spin lock for interrupt handler
Renesas R-Car driver interrupt handler was not locked before.
But now, SSI/SRC interrupt handler calls restart function
which should be called under spin lock.
Below error might happen witout this patch.

Unable to handle kernel NULL pointer dereference at virtual address 00000048
pgd = edfac000
[00000048] *pgd=6e0f0831, *pte=00000000, *ppte=00000000
Internal error: Oops: 17 [#1] SMP ARM
CPU: 0 PID: 2009 Comm: aplay Not tainted 4.1.0-rc2-dirty #4
Hardware name: Generic R8A7790 (Flattened Device Tree)
task: eeac9040 ti: eebe8000 task.ti: eebe8000
PC is at rsnd_get_adinr+0x28/0x60
LR is at rsnd_src_ssiu_start+0xdc/0x19c
pc : [<c0409790>]    lr : [<c040c068>]    psr: a0000193
sp : eebe9e58  ip : eebe9e68  fp : eebe9e64
r10: c06ed9d0  r9 : ee919d10  r8 : 00000001
r7 : 00000001  r6 : ee1cb090  r5 : 00000000  r4 : edcaa418
r3 : 00000000  r2 : eea8ce00  r1 : 80000193  r0 : edcaa418
...

Reported-by: Cao Minh Hiep <cm-hiep@jinso.co.jp>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Tested by: Cao Minh Hiep <cm-hiep@jinso.co.jp>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 14:15:26 +01:00
Mark Brown
e8a07d60c9 Merge branch 'topic/rcar-dma' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-rcar 2015-05-22 14:15:16 +01:00
Kuninori Morimoto
d23c9a0a5c dmaengine: rcar-dmac: fixup spinlock in rcar-dmac
Current rcar-dmac driver is using spin_lock_irq() / spin_unlock_irq()
in some functions. But, some other driver might call DMAEngine API
during interrupt disabled. In such case, rcar-dmac side spin_unlock_irq()
forcefully allows all interrupts. Therefore, other driver receives
unexpected interruption, and its exclusive access control will be broken.
This patch replaces spin_lock_irq() to spin_lock_irqsave(),
and spin_unlock_irq() to spin_unlock_irqrestore().

Reported-by: Cao Minh Hiep <cm-hiep@jinso.co.jp>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 14:14:21 +01:00
Kuninori Morimoto
b723550d7e ASoC: rsnd: rsrc-card uses FE/BE merged format when DPCM
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 14:13:09 +01:00
Mark Brown
96a5d3f017 Merge branch 'topic/dpcm' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-rcar 2015-05-22 14:12:56 +01:00
Heiko Schocher
dd01500269 drm/panel: simple: Add support for LG LB070WV8 800x480 7" panel
This adds support for the LG LB070WV8 7" 800x480 panel to the DRM simple
panel driver.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
2015-05-22 15:02:59 +02:00
Laxman Dewangan
69eb0980ab regulator: max8973: add mechanism to enable/disable through GPIO
MAX8973 supports the voltage output enable/disable through its EN
pin. This EN pin can be connected through GPIO from host processor.
Add support to provide GPIO number from platform/DT and if it is
valid GPIO then enable external control default.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:47:33 +01:00
Laxman Dewangan
c2ffa97378 regulator: max8973: add DT parsing of platform specific parameter
There are some platform specific parameter required to configure
the device like enable external control, DVS gpio etc.

Add DT parsing of such properties to make platform specific data.

Update DT binding doc accordingly.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:47:33 +01:00
Maciej S. Szmigiero
a60abdf93b ASoC: ac97: make selectable in config
Make generic ASoC AC'97 CODEC selectable in config.

This way this driver can be used for platforms which don't need
specialized AC'97 CODEC drivers but which are not directly
selectable in config themselves (for example DT based ones).

Signed-off-by: Maciej Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:41:25 +01:00
Kuninori Morimoto
b073ed4e21 ASoC: soc-pcm: DPCM cares BE format
Current DPCM is caring only FE format. but it will be no sound
if FE/BE was below style, and user selects S24_LE format.

        FE: S16_LE/S24_LE
        BE: S16_LE

DPCM can rewrite the format, so basically we don't want to
constrain with the BE constraints. But sometimes it will be trouble.
This patch adds new .dpcm_merged_format on struct snd_soc_dai_link.
DPCM will use FE / BE merged format if .struct snd_soc_dai_link
has it. We can have other .dpcm_merged_xxx in the future

    .dpcm_merged_foramt
    .dpcm_merged_rate
    .dpcm_merged_chan

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:38:40 +01:00
Srinivas Kandagatla
b202836a54 ASoC: qcom: Document apq8016 bindings.
This patch updates lpass bindings with apq8016 specific bindings.

Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:33:15 +01:00
Krzysztof Kozlowski
81cc6edc08 dmaengine: pl330: Fix hang on dmaengine_terminate_all on certain boards
The pl330 device could hang infinitely on certain boards when DMA
channels are terminated.

It was caused by lack of runtime resume when executing
pl330_terminate_all() which calls the _stop() function. _stop() accesses
device register and can loop infinitely while checking for device state.

The hang was confirmed by Dinh Nguyen on Altera SOCFPGA Cyclone V
board during boot. It can be also triggered with:

$ echo 1 > /sys/module/dmatest/parameters/iterations
$ echo dma1chan0 > /sys/module/dmatest/parameters/channel
$ echo 1 > /sys/module/dmatest/parameters/run
$ sleep 1
$ cat /sys/module/dmatest/parameters/run

Reported-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: ae43b32891 ("ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12")
Cc: <stable@vger.kernel.org>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-05-22 18:01:03 +05:30
Srinivas Kandagatla
89cdfa06d9 ASoC: qcom: add bit map to track static dma channel allocations
This patch adds dma channel bit mask to lpass data to keep track of dma
channel allocations. This flag would be used in apq8016 lpass driver.

Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:27:07 +01:00
Srinivas Kandagatla
4f629e4b87 ASoC: qcom: Add ability to handle interrupts per dma channel
This patch adds ablity to lpass driver to handle interrupt per dma
channel. Without this patch its not possible to use multipl ports on the
lpass.

Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:27:06 +01:00
Srinivas Kandagatla
0054055c59 ASoC: qcom: add dma channel control offset to variant data
This patch adds ability to pass dma channel control bits start offset,
which differ in differnet qcom SOCs. On apq8016 dma channel control bits
start after an offset of 1.

Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:27:06 +01:00
Srinivas Kandagatla
3e53ac8230 ASoC: qcom: make osr clock optional
Some LPASS integrations like on APQ8016 do not have OSR clk, so making
osr clk optional would allow such integrations to use lpass driver.

Tested-by: Kenneth Westfield <kwestfie@codeaurora.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-05-22 13:27:06 +01:00