Adds drm bride support for attaching drm bridge drivers to tilcdc. The
decision whether a video port leads to an external encoder or bridge
is made simply based on remote device's compatible string. The code
has been tested with BeagleBone-Black with and without BeagleBone
DVI-D Cape Rev A3 using ti-tfp410 driver.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Add very basic ti-tfp410 DVI transmitter driver. The only feature
separating this from a completely dummy bridge is the EDID read
support trough DDC I2C. Even that functionality should be in a
separate generic connector driver. However, because of missing DRM
infrastructure support the connector is implemented within the bridge
driver. Some tfp410 HW specific features may be added later if needed,
because there is a set of registers behind i2c if it is connected.
This implementation is tested against my new tilcdc bridge support
and it works with BeagleBone DVI-D Cape Rev A3. A DT binding document
is also updated.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Move "ti,tfp410.txt" from display/ti to display/bridge before adding
generic (non omapdrm/dss specific) implementation and new features.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Enable CONFIG_KEXEC_FILE in powernv_defconfig, ppc64_defconfig and
pseries_defconfig.
It depends on CONFIG_CRYPTO_SHA256=y, so add that as well.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Define the Kconfig symbol so that the kexec_file_load() code can be
built, and wire up the syscall so that it can be called.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This purgatory implementation is based on the versions from kexec-tools
and kexec-lite, with additional changes.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This patch adds the support code needed for implementing
kexec_file_load() on powerpc.
This consists of functions to load the ELF kernel, either big or little
endian, and setup the purgatory enviroment which switches from the first
kernel to the second kernel.
None of this code is built yet, as it depends on CONFIG_KEXEC_FILE which
we have not yet defined. Although we could define CONFIG_KEXEC_FILE in
this patch, we'd then have a window in history where the kconfig symbol
is present but the syscall is not, which would be awkward.
Signed-off-by: Josh Sklar <sklar@linux.vnet.ibm.com>
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Commit 2965faa5e0 ("kexec: split kexec_load syscall from kexec core
code") introduced CONFIG_KEXEC_CORE so that CONFIG_KEXEC means whether
the kexec_load system call should be compiled-in and CONFIG_KEXEC_FILE
means whether the kexec_file_load system call should be compiled-in.
These options can be set independently from each other.
Since until now powerpc only supported kexec_load, CONFIG_KEXEC and
CONFIG_KEXEC_CORE were synonyms. That is not the case anymore, so we
need to make a distinction. Almost all places where CONFIG_KEXEC was
being used should be using CONFIG_KEXEC_CORE instead, since
kexec_file_load also needs that code compiled in.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
kexec_locate_mem_hole will be used by the PowerPC kexec_file_load
implementation to find free memory for the purgatory stack.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This is done to simplify the kexec_add_buffer argument list.
Adapt all callers to set up a kexec_buf to pass to kexec_add_buffer.
In addition, change the type of kexec_buf.buffer from char * to void *.
There is no particular reason for it to be a char *, and the change
allows us to get rid of 3 existing casts to char * in the code.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Allow architectures to specify a different memory walking function for
kexec_add_buffer. x86 uses iomem to track reserved memory ranges, but
PowerPC uses the memblock subsystem.
Signed-off-by: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Recover from sync lost error flood by resetting the LCDC instead of
turning off the SYNC_LOST error IRQ. When LCDC starves on limited
memory bandwidth it may sometimes result an error situation when the
picture may have shifted couple of pixels to right and SYNC_LOST
interrupt is generated on every frame. LCDC main reset recovers from
this situation and causes a brief blanking on the screen.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Fix the following Calltrace:
[ 77.768221] WARNING: CPU: 5 PID: 645 at drivers/dma/dmaengine.c:1069 dma_async_device_unregister+0xe2/0xf0
[ 77.775058] dma_async_device_unregister called while 1 clients hold a reference
[ 77.825048] CPU: 5 PID: 645 Comm: sh Not tainted 4.8.8-WR9.0.0.0_standard+ #3
[ 77.832550] Hardware name: Intel Corp. Aspen Cove/Server, BIOS HAVLCRB1.X64.0012.D58.1604140405 04/14/2016
[ 77.840396] 0000000000000000 ffffc90008adbc80 ffffffff81403456 ffffc90008adbcd0
[ 77.848245] 0000000000000000 ffffc90008adbcc0 ffffffff8105e2e1 0000042d08adbf20
[ 77.855934] ffff88046a861c18 ffff88046a85c420 ffffffff820d4200 ffff88046ae92318
[ 77.863601] Call Trace:
[ 77.871113] [<ffffffff81403456>] dump_stack+0x4f/0x69
[ 77.878655] [<ffffffff8105e2e1>] __warn+0xd1/0xf0
[ 77.886102] [<ffffffff8105e34f>] warn_slowpath_fmt+0x4f/0x60
[ 77.893508] [<ffffffff814187a9>] ? find_next_bit+0x19/0x20
[ 77.900730] [<ffffffff814bf83e>] ? dma_channel_rebalance+0x23e/0x270
[ 77.907814] [<ffffffff814bfee2>] dma_async_device_unregister+0xe2/0xf0
[ 77.914992] [<ffffffff814c53aa>] hsu_dma_remove+0x1a/0x60
[ 77.921977] [<ffffffff814ee14c>] dnv_exit+0x1c/0x20
[ 77.928752] [<ffffffff814edff6>] mid8250_remove+0x26/0x40
[ 77.935607] [<ffffffff8144f1b9>] pci_device_remove+0x39/0xc0
[ 77.942292] [<ffffffff8160cfea>] __device_release_driver+0x9a/0x140
[ 77.948836] [<ffffffff8160d0b3>] device_release_driver+0x23/0x30
[ 77.955364] [<ffffffff81447dcc>] pci_stop_bus_device+0x8c/0xa0
[ 77.961769] [<ffffffff81447f0a>] pci_stop_and_remove_bus_device_locked+0x1a/0x30
[ 77.968113] [<ffffffff81450d4e>] remove_store+0x5e/0x70
[ 77.974267] [<ffffffff81607ed8>] dev_attr_store+0x18/0x30
[ 77.980243] [<ffffffff8123006a>] sysfs_kf_write+0x3a/0x50
[ 77.986180] [<ffffffff8122f5ab>] kernfs_fop_write+0x10b/0x190
[ 77.992118] [<ffffffff811bf1c8>] __vfs_write+0x18/0x40
[ 77.998032] [<ffffffff811bfdee>] vfs_write+0xae/0x190
[ 78.003747] [<ffffffff811c1016>] SyS_write+0x46/0xb0
[ 78.009234] [<ffffffff81a4c31b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[ 78.014809] ---[ end trace 0c36dd73b7408eb2 ]---
This happens when the 8250 serial controller is hotplugged as follows:
echo 1 > /sys/bus/pci/devices/0000:00:1a.0/remove
This trace happens due to the serial port still holding a reference when
the dma device is unregistered.
The dma unregister routine will check if there is still a reference exist,
if so it will give the WARNING(here serial port still was not unregister).
To fix this, We need to unregister the serial port first, then do DMA
device unregister to make sure there is no reference when to DMA routine.
Signed-off-by: Liwei Song <liwei.song@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function we are wrapping is named dma_alloc_noncoherent, and
not dma_alloc_non_coherent.
Fixes: 9ac7849e35 ("devres: device resource management")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The new driver caused a rare randconfig failure:
drivers/auxdisplay/ht16k33.o:(.data.ht16k33_fb_ops+0xc): undefined reference to `fb_sys_read'
drivers/auxdisplay/ht16k33.o:(.data.ht16k33_fb_ops+0x10): undefined reference to `fb_sys_write'
This selects the respective helper modules.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The CBC encryption routine should use the encryption round keys, not
the decryption round keys.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Add support for following AEAD algos.
GCM,CCM,RFC4106,RFC4309,authenc(hmac(shaXXX),cbc(aes)).
Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Use SHASH_DESC_ON_STACK macro to allocate memory for ipad/opad
calculation.
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Destination buffer size passed to hardware should not be greater
than crypto operation output.
Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Remove malloc/free in hash operation and allocate
memory in chcr_ahash_req_ctx structure.
Signed-off-by: Jitendra Lulla <JLULLA@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Added new structure chcr_wr to populate Work Request Header.
Signed-off-by: Jitendra Lulla <JLULLA@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Moves get_aes_decrypt_key function to .c file and declare inline for
"aes_ks_subword"
Signed-off-by: Jitendra Lulla <JLULLA@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Fix a missing statement that got lost in the skcipher conversion of
the CTR transform.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The new skcipher_walk_aead() may crash in the following way due to
the walk flag SKCIPHER_WALK_PHYS not being cleared at the start of the
walk:
Unable to handle kernel NULL pointer dereference at virtual address 00000001
[..]
Internal error: Oops: 96000044 [#1] PREEMPT SMP
[..]
PC is at skcipher_walk_next+0x208/0x450
LR is at skcipher_walk_next+0x1e4/0x450
pc : [<ffff2b93b7104e20>] lr : [<ffff2b93b7104dfc>] pstate: 40000045
sp : ffffb925fa517940
[...]
[<ffff2b93b7104e20>] skcipher_walk_next+0x208/0x450
[<ffff2b93b710535c>] skcipher_walk_first+0x54/0x148
[<ffff2b93b7105664>] skcipher_walk_aead+0xd4/0x108
[<ffff2b93b6e77928>] ccm_encrypt+0x68/0x158
So clear the flag at the appropriate time.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When building the arm64 kernel with both CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
and CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y configured, the build breaks with
the following error:
arch/arm64/crypto/aes-neon-blk.o:(.bss+0x0): multiple definition of `aes_simd_algs'
arch/arm64/crypto/aes-ce-blk.o:(.bss+0x0): first defined here
Fix this by making aes_simd_algs 'static'.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This patch adds one more missing SIMD select for AES_ARM_BS. It
also changes selects on ALGAPI to BLKCIPHER.
Fixes: 211f41af53 ("crypto: aesbs - Convert to skcipher")
Reported-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
The scripts to replace NULL test got confused with the
macro parenthesis so the unlikely test in libcfs_private.h
ended up incorrect. This fixes this error.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Both asn1 headers are included by rsa_helper.c, so rsa_helper.o
should explicitly depend on them.
Signed-off-by: David Michael <david.michael@coreos.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
When using SGs, only heap memory (memory that is valid as per
virt_addr_valid) is allowed to be referenced. The CTR DRBG used to
reference the caller-provided memory directly in an SG. In case the
caller provided stack memory pointers, the SG mapping is not considered
to be valid. In some cases, this would even cause a paging fault.
The change adds a new scratch buffer that is used unconditionally to
catch the cases where the caller-provided buffer is not suitable for
use in an SG. The crypto operation of the CTR DRBG produces its output
with that scratch buffer and finally copies the content of the
scratch buffer to the caller's buffer.
The scratch buffer is allocated during allocation time of the CTR DRBG
as its access is protected with the DRBG mutex.
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This updates some out of date documentation and fixes some wrong assumptions as
well as pure grammar fixes. This file needs to move towards the new kernel doc
system and getting an overhaul during this work.
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
When using fakelb with different network sizes it becomes handy to have the
number of created fake devices printed in the log as well.
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Going to help Alexander, spread the review and development load.
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Alexander Aring <aar@pengutronix.de>
This patch changes the rssi base value to -94 for at86rf33 transceivers.
The code before assumes a rssi base value of -91 which is for the
at86rf231 transceiver only. This change need to update the cca ed
threshold mapping table.
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
I've observed a NULL pointer dereference in ieee802154_del_iface() during
netlink fuzzing. It's the ->wpan_phy dereference here:
phy = dev->ieee802154_ptr->wpan_phy;
My bet is that we're not checking that this is an IEEE802154 interface,
so let's do what ieee802154_nl_get_dev() is doing. (Maybe we should even
be calling this directly?)
Cc: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Sergey Lapin <slapin@ossfans.org>
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Acked-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Exynos5433 SoC has MFC v8 hardware module, but it has more
complex clock hierarchy, so a new compatible is added.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch changes the code for handling clocks. Now clocks are defined
per each device variant, what is a preparation for adding support for
Exynos 5433 MFC V8, which has more clocks than all previous versions.
Also use devm_clk_get() to simplify cleanup path.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch moves preparation of clocks from s5p_mfc_init_pm()
(driver probe) to s5p_mfc_power_on() (start of device operation).
This change will allow to use runtime power usage optimization
on newer Samsung Exynos platforms (for example Exynos 5433).
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
After commit "s5p-mfc: Fix clock management in s5p_mfc_release function"
all clocks related functions are called only when MFC device is really
available, so there is no additional check needed for NULL
gate clocks. This patch simplifies the code and kills IS_ERR_OR_NULL
macro usage.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
CONFIG_PM is always enabled on Exynos platforms, so remove dead code
related to early development of MFC driver on platform without PM support.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Move clock disabling before turning power off. This will enable later
to add calls to clk_prepare/unprepare in the s5p_mfc_power_off() function
to avoid keeping clocks prepared all the time when driver is bound.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The maximum rate of special clock depends on SoC variant and should
be set in device tree via assigned-clock-rates property, so remove
the code which forces special clock to 200MHz.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some applications don't check error codes from QBUF/DQBUF ioctls,
so don't spam kernel log with errors if they fall into endless loop
trying to queue next buffer after a failure.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
We do video allocation all the time and we need it to be fast. Plus TLB
efficiency isn't terribly important for video.
That means we want to set DMA_ATTR_ALLOC_SINGLE_PAGES.
See also the previous change (commit 14d3ae2efe "ARM: dma-mapping: Use
DMA_ATTR_ALLOC_SINGLE_PAGES hint to optimize allocation").
[m.szyprowski: rebased patch onto v4.9-rc1 and adapted changes
to latest videbuf2 changes, this simplifies code changes to
only set proper dma attribute flag and comment the reason
for it, added commit id of arch/arm/mm patch]
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the driver is built as a module, autoload won't work because the module
alias information is not filled. So user-space can't match the registered
device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro.
Before this patch:
$ modinfo drivers/leds//leds-netxbig.ko | grep alias
alias: platform:leds-netxbig
After this patch:
$ modinfo drivers/leds//leds-netxbig.ko | grep alias
alias: platform:leds-netxbig
alias: of:N*T*Clacie,netxbig-ledsC*
alias: of:N*T*Clacie,netxbig-leds
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
