Add V4L2_CID_DIGITAL_GAIN to control explicitly digital gain.
We already have analogue gain control which the digital gain control
complements. Typically higher quality images are obtained using analogue
gain only as the digital gain does not add information to the image
(rather it may remove it).
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This driver is based on ov5640_mipi.c from Freescale imx_3.10.17_1.0.0_beta
branch, modified heavily to bring forward to latest interfaces and code
cleanup.
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This driver can handle SoC internal and external video bus multiplexers,
controlled by mux controllers provided by the mux controller framework,
such as MMIO register bitfields or GPIOs. The subdevice passes through
the mbus configuration of the active input to the output side.
Since the mux framework is not yet merged, this driver contains
temporary mmio-mux support to work without the framework. The driver
should be converted to use the multiplexer API once the "mux: minimal
mux subsystem" and "mux: mmio-based syscon mux controller" patches are
merged.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
[hans.verkuil@cisco.com: add 'select REGMAP' to Kconfig]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
load is an unsigned integer. So, it is always bigger or equal
to zero, as reported by gcc:
drivers/media/i2c/max2175.c: In function 'max2175_refout_load_to_bits':
drivers/media/i2c/max2175.c:1272:11: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
if (load >= 0 && load <= 40)
^~
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch adds Digital Radio Interface (DRIF) support to R-Car Gen3 SoCs.
The driver exposes each instance of DRIF as a V4L2 SDR device. A DRIF
device represents a channel and each channel can have one or two
sub-channels respectively depending on the target board.
DRIF supports only Rx functionality. It receives samples from a RF
frontend tuner chip it is interfaced with. The combination of DRIF and the
tuner device, which is registered as a sub-device, determines the receive
sample rate and format.
In order to be compliant as a V4L2 SDR device, DRIF needs to bind with
the tuner device, which can be provided by a third party vendor. DRIF acts
as a slave device and the tuner device acts as a master transmitting the
samples. The driver allows asynchronous binding of a tuner device that
is registered as a v4l2 sub-device. The driver can learn about the tuner
it is interfaced with based on port endpoint properties of the device in
device tree. The V4L2 SDR device inherits the controls exposed by the
tuner device.
The device can also be configured to use either one or both of the data
pins at runtime based on the master (tuner) configuration.
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch adds support for the three new SDR formats. These formats
were prefixed with "planar" indicating I & Q data are not interleaved
as in other formats. Here, I & Q data constitutes the top half and bottom
half of the received buffer respectively.
V4L2_SDR_FMT_PCU16BE - 14-bit complex (I & Q) unsigned big-endian sample
inside 16-bit. V4L2 FourCC: PC16
V4L2_SDR_FMT_PCU18BE - 16-bit complex (I & Q) unsigned big-endian sample
inside 18-bit. V4L2 FourCC: PC18
V4L2_SDR_FMT_PCU20BE - 18-bit complex (I & Q) unsigned big-endian sample
inside 20-bit. V4L2 FourCC: PC20
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch adds driver support for the MAX2175 chip. This is Maxim
Integrated's RF to Bits tuner front end chip designed for software-defined
radio solutions. This driver exposes the tuner as a sub-device instance
with standard and custom controls to configure the device.
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use the needs-hpd DT property to determine if the CEC_CAP_NEEDS_HPD
should be set.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add a new capability CEC_CAP_NEEDS_HPD. If this capability is set
then the hardware can only use CEC if the HDMI Hotplug Detect pin
is high. Such hardware cannot handle the corner case in the CEC specification
where it is possible to transmit messages even if no hotplug signal is
present (needed for some displays that turn off the HPD when in standby,
but still have CEC enabled).
Typically hardware that needs this capability have the HPD wired to the CEC
block, often to a 'power' or 'active' pin.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use the helper function cec_transmit_attempt_done instead of
cec_transmit_done to simplify the code.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
A simpler variant of cec_transmit_done to be used where the HW does
just a single attempt at a transmit. So if the status indicates an
error, then the corresponding error count will always be 1 and this
function figures that out based on the status argument.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This function simplifies the integration of CEC in DRM drivers.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.
Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:
@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_put, __skb_put };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)
@@
expression E, SKB, LEN;
identifier fn = { skb_put, __skb_put };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)
which actually doesn't cover pskb_put since there are only three
users overall.
A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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BackMerge tag 'v4.12-rc5' into drm-next
Linux 4.12-rc5 for nouveau fixes
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Merge tag 'media/v4.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- some build dependency issues at CEC core with randconfigs
- fix an off by one error at vb2
- a race fix at cec core
- driver fixes at tc358743, sir_ir and rainshadow-cec
* tag 'media/v4.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] media/cec.h: use IS_REACHABLE instead of IS_ENABLED
[media] cec: race fix: don't return -ENONET in cec_receive()
[media] sir_ir: infinite loop in interrupt handler
[media] cec-notifier.h: handle unreachable CONFIG_CEC_CORE
[media] cec: improve MEDIA_CEC_RC dependencies
[media] vb2: Fix an off by one error in 'vb2_plane_vaddr'
[media] rainshadow-cec: Fix missing spin_lock_init()
[media] tc358743: fix register i2c_rd/wr function fix
Fix the position of arguments so camif->colorfx_cb, camif->colorfx_cr
are passed in proper order to the camif_hw_set_effect() function.
Addresses-Coverity-ID: 1248800
Addresses-Coverity-ID: 1269141
[s.nawrocki@samsung.com: edited commit message ]
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As this is not in atomic context and it does not seem like a critical
timing setting a range of 1ms allows the timer subsystem to optimize
the hrtimer here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use colorspace provided by the user as we are only doing scaling and
color encoding conversion, we won't be able to transform the colorspace
itself and the colorspace won't mater in that operation.
Also always use output colorspace on the capture side.
If the user does not provide a colorspace do not make it up, we might
later while processing need to figure out the colorspace, which
is possible depending on the frame size but do not ever guess and
leak that guess to the userspace.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Thibault Saunier <thibault.saunier@osg.samsung.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Trivial fix to spelling mistake in mfc_err error messages
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
v4l2_m2m_job_finish(), which is called from the interrupt handler with
slock acquired, can call the device_run() hook immediately if another
context was in the queue. This hook also acquires slock, resulting in
a deadlock for this scenario.
Fix this by releasing slock right before calling v4l2_m2m_job_finish().
This is safe to do as the state of the hardware cannot change before
v4l2_m2m_job_finish() is called anyway.
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Now that rc_register_device() is reorganised, the dev->initialized
hack can be removed. Any driver which calls rc_register_device()
must be prepared for the device to go live immediately.
The dev->initialized commits that are relevant are commit c73bbaa4ec
("[media] rc-core: don't lock device at rc_register_device()") and
commit 08aeb7c9a4 ("[media] rc: add locking to fix register/show race").
The original problem was that show_protocols() would access
dev->rc_map.* and various other bits which are now properly
initialized before device_add() is called.
At the same time, remove the bogus "device is being removed" check.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The device core infrastructure is based on the presumption that
once a driver calls device_add(), it must be ready to accept
userspace interaction.
This requires splitting rc_setup_rx_device() into two functions
and reorganizing rc_register_device() so that as much work
as possible is performed before calling device_add().
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This module was merged after commit 5a8fc6a3ce ("Annotate hardware
config module parameters in drivers/media/"), so add add the missing
hardware annotations.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch add cec driver for STM32 platforms.
cec hardware block isn't not always used with hdmi so
cec notifier is not implemented. That will be done later
when STM32 DSI driver will be available.
Driver compliance has been tested with cec-ctl and cec-compliance
tools.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
[hans.verkuil@cisco.com: modified platform/Makefile to use obj-y]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The display buffers must be mapped for DMA through the device that
performs memory access. Expose an API to map and unmap memory through
the VSP device to be used by the DU.
As all the buffers allocated by the DU driver are coherent, we can skip
cache handling when mapping and unmapping them. This will need to be
revisited when support for non-coherent buffers will be added to the DU
driver.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
[Kieran: Remove unused header]
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Mauro Cavalho Chehab <mchehab@s-opensource.com>
On Gen2 hardware the VSP1 is a bus master and accesses the display list
and video buffers through DMA directly. On Gen3 hardware, however,
memory accesses go through a separate IP core called FCP.
The VSP1 driver unconditionally maps DMA buffers through the VSP device.
While this doesn't cause any practical issue so far, DMA mappings will
be incorrect as soon as we will enable IOMMU support for the FCP on Gen3
platforms, resulting in IOMMU faults.
Fix this by mapping all buffers through the FCP device if present, and
through the VSP1 device as usual otherwise.
Suggested-by: Magnus Damm <magnus.damm@gmail.com>
[Cache the bus master device]
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Mauro Cavalho Chehab <mchehab@s-opensource.com>
The new rcar_fcp_get_device() function retrieves the struct device
related to the FCP device. This is useful to handle DMA mapping through
the right device.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Mauro Cavalho Chehab <mchehab@s-opensource.com>
Direct callers of the FCP API hold a reference to the FCP module due to
module linkage, there's no need to take another one manually. Take a
reference to the device instead to ensure that it won't disappear behind
the caller's back.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Mauro Cavalho Chehab <mchehab@s-opensource.com>
The buffer cache should be synchronised in buffer preparation, not when
the buffer is queued to the device. Fix this.
Mmap buffers do not need cache synchronisation since they are always
coherent.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Rename __qbuf_*() functions which are specific to a buffer type as
__prepare_*() which matches with what they do. The naming was there for
historical reasons; the purpose of the functions was changed without
renaming them.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It is 'R-Car', not 'RCar'. No code or binding changes, only descriptive text.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The async sub-device was not unregistered in ad5820_remove() as it should
have been; do it now. Also remove the now-redundant
v4l2_device_unregister_subdev().
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Depending on arch configs to include dirs is evil, and makes
harder to change drivers to work with COMPILE_TEST.
Replace them by obj-y.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The DaVinci VPIF capture driver V4L2 OF support was added after the V4L2
OF framework got removed. Switch VPIF capture driver to V4L2 fwnode.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
When calling CEC_RECEIVE do not check if the adapter is configured.
Typically CEC_RECEIVE is called after a select() and if that indicates
that there are messages in the receive queue, then you should always be
able to dequeue a message.
The race condition here is that a message has been received and is
queued, so select() tells userspace that a message is available. But
before the application calls CEC_RECEIVE the adapter is unconfigured
(e.g. the HDMI cable is removed). Now select will always report that
there is a message, but calling CEC_RECEIVE will always return -ENONET
because the adapter is no longer configured and so will never actually
dequeue the message.
There is really no need for this check, and in fact the ENONET error
code was never documented for CEC_RECEIVE. This may have been a left-over
of old code that was never updated.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v4.10 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The 2nd check of cnt > 8 is redundant as cnt is already checked
and thresholded to a maximum of 8 a few statements earlier.
Remove this redundant 2nd check.
Detected by CoverityScan, CID#114281 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some EXPORT_SYMBOL() on this file don't match the name of functions
that preceeds them.
Also, some kernel-doc markups also have a wrong name. Fix it.
Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Make checkpatch happier by fixing this warning:
ERROR: "foo * bar" should be "foo *bar"
Signed-off-by: Jasmin Jessich <jasmin@anw.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
A driver error message is shown without DEBUG definition
to find an error and debug easily.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the mdp_* nodes are under an mdp sub-node, their corresponding
platform device does not automatically get its iommu assigned properly.
Fix this by moving the mdp component nodes up a level such that they are
siblings of mdp and all other SoC subsystems. This also simplifies the
device tree.
Although it fixes iommu assignment issue, it also break compatibility
with old device tree. So, the patch in driver is needed to iterate over
sibling mdp device nodes, not child ones, to keep driver work properly.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
That way we don't have to rely on userspace to inject the headers on IDR
requests, and there is always enough information to start decoding at an
I-frame.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Implement the V4L2_CID_MPEG_VIDEO_FORCE_KEY_FRAME control to force IDR
frames. This is useful to implement VFU (Video Fast Update) on RTP
transmissions.
We already force an IDR frame at the beginning of each GOP to work
around a firmware bug on i.MX27, use the same mechanism to service IDR
requests from userspace.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The driver may sleep under a spin lock, and the function call path is:
snd_cx18_pcm_hw_free (acquire the lock by spin_lock_irqsave)
vfree --> may sleep
To fix it, the "substream->runtime->dma_area" is passed to a temporary
value, and mark it NULL when holding the lock. The memory is freed by
vfree through the temporary value outside the lock holding.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
[hans.verkuil@cisco.com: removed unnecessary 'if (dma_area)']
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The driver may sleep under a spin lock, and the function call path is:
snd_ivtv_pcm_hw_free (acquire the lock by spin_lock_irqsave)
vfree --> may sleep
To fix it, the "substream->runtime->dma_area" is passed to a temporary
value, and mark it NULL when holding the lock. The memory is freed by
vfree through the temporary value outside the lock holding.
Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
[hans.verkuil@cisco.com: removed unnecessary 'if (dma_area)']
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The current driver has a handful of hard-coded assumptions based on its
primary use for capture of video signals. Cleanup those assumptions,
and also query the subdev for format information and use that if
available.
Tested with 10-bit raw bayer input (SGRBG10) using the aptina,mt9v032
sensor, and also tested that composite video input still works from
ti,tvp514x decoder. Both tests done on the da850-evm board with the
add-on UI board.
NOTE: Will need further testing for other sensors with different bus
formats.
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Enable getting of subdevs from DT ports and endpoints.
The _get_pdata() function was larely inspired by (i.e. stolen from)
am437x-vpfe.c
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Capture driver silently overrides pixel format with a hack (according to
the comments) to pass v4l2 compliance tests. This isn't needed for
normal functionality, and works for composite video and raw camera capture
without.
In addition, the hack assumes that it only supports raw capture with a
single format (SBGGR8) which isn't true. VPIF can also capture 10- and
12-bit raw formats as well. Forthcoming patches will enable VPIF
input with raw-camera support and has been tested with 10-bit format
from the aptina,mt9v032 sensor.
Any compliance failures should be fixed with a real fix.
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The ir-spi driver has 2 issues which prevents it from working with
lirc:
1. The ir-spi driver uses 16 bits of SPI data to create one cycle of
the waveform. As such our SPI clock needs to be 16x faster than the
carrier frequency.
The driver is inconsistent in how it currently handles this. It
initializes it to the carrier frequency:
But the commit message has some example code which initialises it
to 16x the carrier frequency:
val = 608000;
ret = ioctl(fd, LIRC_SET_SEND_CARRIER, &val);
To maintain compatibility with lirc, always do the frequency adjustment
in the driver.
2. lirc presents pulses in microseconds, but the ir-spi driver treats
them as cycles of the carrier. Similar to other lirc drivers, do the
conversion with DIV_ROUND_CLOSEST().
Fixes: fe052da492 ("[media] rc: add support for IR LEDs driven through SPI")
Cc: stable@vger.kernel.org
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Drop a since commit e1159cb357 ("[media] mceusb: remove pointless
mce_flush_rx_buffer function") redundant reinitialisation of two urb
fields immediately after they have been initialised.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix urb and transfer-buffer leaks in an urb-submission error path which
may be hit when a device is disconnected.
Fixes: 66e89522af ("V4L/DVB: IR: add mceusb IR receiver driver")
Cc: stable <stable@vger.kernel.org> # 2.6.36
Cc: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
interrupts is listed as an optional property in the DT
binding, but in reality the driver didn't work without it.
The existing driver relied on having the interrupt line
connected to the SoC to trigger handling various events.
Add the option to poll the interrupt status register via
a timer if no interrupt source is defined.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Previously the mbus_fmt_code was set after the device was
registered. If a connected sub-device called tc358743_get_fmt
prior to that point it would get an invalid code back.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There was no way to query the supported mbus formats from this
driver. enum_mbus_code is the function to expose that, so
implement it.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
- use __func__ instead of writing the full function name
- drop debug message in cec_config_log_addr since the same information
will be reported later
- use debug level 1 for errors and infrequent events, use level 2 for
debugging CEC message traffic
- log when a transmit is retried, very useful to know when debugging
- debug messages now all start with lower case
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
clk_prepare_enable() can fail here and we must check its return value.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The mutex that was initialised in v4l2_ctrl_handler_init_class() was not
destroyed in v4l2_ctrl_handler_free(). Do that.
Additionally, explicitly refer to the ctrl handler's mutex in mutex
initialisation for clarity.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Sometimes the caller is already holding the control handler mutex and
using it to serialise something. Provide an unlocked variant of the same
function to be used in those cases.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Ensure that ISI is clocked before starting sensor sub device.
Remove un-needed type check in try_fmt().
Use clamp() macro for hardware capabilities.
Fix wrong tabulation to space.
Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Merge tag 'media/v4.12-2' into patchwork
media fixes for v4.12-rc4
* tag 'media/v4.12-2': (598 commits)
[media] rc-core: race condition during ir_raw_event_register()
[media] cec: drop MEDIA_CEC_DEBUG
[media] cec: rename MEDIA_CEC_NOTIFIER to CEC_NOTIFIER
[media] cec: select CEC_CORE instead of depend on it
[media] rainshadow-cec: ensure exit_loop is intialized
[media] atomisp: don't treat warnings as errors
Linux 4.12-rc3
x86/ftrace: Make sure that ftrace trampolines are not RWX
x86/mm/ftrace: Do not bug in early boot on irqs_disabled in cpu_flush_range()
selftests/ftrace: Add a testcase for many kprobe events
kprobes/x86: Fix to set RWX bits correctly before releasing trampoline
ftrace: Fix memory leak in ftrace_graph_release()
ipv4: add reference counting to metrics
net: ethernet: ax88796: don't call free_irq without request_irq first
ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
sctp: fix ICMP processing if skb is non-linear
net: llc: add lock_sock in llc_ui_bind to avoid a race condition
PCI/msi: fix the pci_alloc_irq_vectors_affinity stub
blk-mq: Only register debugfs attributes for blk-mq queues
x86/timers: Move simple_udelay_calibration past init_hypervisor_platform
...
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Avoid a double fetch by reusing the values from the prior transfer.
Originally reported via https://bugzilla.kernel.org/show_bug.cgi?id=195559
Thanks to Pengfei Wang <wpengfeinudt@gmail.com> for reporting.
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Reported-by: Pengfei Wang <wpengfeinudt@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
For both BT.656 and BT.1120 video, the pixel format
used by VPIF is Y/CbCr 4:2:2 in semi-planar format
(Luma in one plane and Chroma in another). This
corresponds to NV16 pixel format.
This is documented in section 36.2.3 of OMAP-L138
Technical Reference Manual, SPRUH77A.
The VPIF driver incorrectly sets the default format
to V4L2_PIX_FMT_YUV422P. Fix it.
Reported-by: Alejandro Hernandez <ajhernandez@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The hardware codec is not colorspace aware. We should trust userspace to
set the correct colorimetry information on the OUTPUT queue and mirror
the exact same setting on the CAPTURE queue.
There is no reason to restrict colorspace to JPEG or REC709 only. Also,
set the default colorspace, as returned by calling VIDIOC_TRY/S_FMT with
V4L2_COLORSPACE_DEFAULT, initially.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Used to differentiate between models with 3 and 6 inputs.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the requested pixelformat is not supported fallback to the default
format, do not revert the entire format.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The return value of __rvin_try_format_source is not checked, add a check
and propagate the error.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There is only one subdevice registered with the async framework so there
is no need for the driver to check which subdevice is bound or unbound.
Remove these checks since the async framework preforms this.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
[hans.verkuil@cisco.com: fix typo: surce -> source]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
With the driver stopping and starting the stream each time the driver is
stalled rvin_capture_off() can be folded in to the only caller.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If userspace can't feed the driver with buffers as fast as the driver
consumes them the driver will stop video capturing and wait for more
buffers from userspace, the driver is stalled. Once it have been feed
one or more free buffers it will recover from the stall and resume
capturing.
Instead of continue to capture using the same capture mode as before the
stall allow the driver to choose between single and continuous mode
based on free buffer availability. Do this by stopping capturing when
the driver becomes stalled and restart capturing once it continues. By
doing
this the capture mode will be evaluated each time the driver is
recovering from a stall.
This behavior is needed to fix a bug where continuous capturing mode is
used, userspace is about to stop the stream and is waiting for the last
buffers to be returned from the driver and is not queuing any new
buffers. In this case the driver becomes stalled when there are only 3
buffers remaining streaming will never resume since the driver is
waiting for userspace to feed it more buffers before it can continue
streaming. With this fix the driver will then switch to single capture
mode for the last 3 buffers and a deadlock is avoided. The issue can be
demonstrated using yavta.
$ yavta -f RGB565 -s 640x480 -n 4 --capture=10 /dev/video22
Device /dev/video22 opened.
Device `R_Car_VIN' on `platform:e6ef1000.video' (driver 'rcar_vin') supports video, capture, without mplanes.
Video format set: RGB565 (50424752) 640x480 (stride 1280) field interlaced buffer size 614400
Video format: RGB565 (50424752) 640x480 (stride 1280) field interlaced buffer size 614400
4 buffers requested.
length: 614400 offset: 0 timestamp type/source: mono/EoF
Buffer 0/0 mapped at address 0xb6cc7000.
length: 614400 offset: 614400 timestamp type/source: mono/EoF
Buffer 1/0 mapped at address 0xb6c31000.
length: 614400 offset: 1228800 timestamp type/source: mono/EoF
Buffer 2/0 mapped at address 0xb6b9b000.
length: 614400 offset: 1843200 timestamp type/source: mono/EoF
Buffer 3/0 mapped at address 0xb6b05000.
0 (0) [-] interlaced 0 614400 B 38.240285 38.240303 12.421 fps ts mono/EoF
1 (1) [-] interlaced 1 614400 B 38.282329 38.282346 23.785 fps ts mono/EoF
2 (2) [-] interlaced 2 614400 B 38.322324 38.322338 25.003 fps ts mono/EoF
3 (3) [-] interlaced 3 614400 B 38.362318 38.362333 25.004 fps ts mono/EoF
4 (0) [-] interlaced 4 614400 B 38.402313 38.402328 25.003 fps ts mono/EoF
5 (1) [-] interlaced 5 614400 B 38.442307 38.442321 25.004 fps ts mono/EoF
6 (2) [-] interlaced 6 614400 B 38.482301 38.482316 25.004 fps ts mono/EoF
7 (3) [-] interlaced 7 614400 B 38.522295 38.522312 25.004 fps ts mono/EoF
8 (0) [-] interlaced 8 614400 B 38.562290 38.562306 25.003 fps ts mono/EoF
<blocks forever, waiting for the last buffer>
This fix also allow the driver to switch to single capture mode if
userspace doesn't feed it buffers fast enough. Or the other way around,
if userspace suddenly feeds the driver buffers faster it can switch to
continues capturing mode.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of selecting single or continuous capture mode based on how many
buffers userspace intends to give us select capture mode based on number
of free buffers we can allocate to hardware when the stream is started.
This change is a prerequisite to enable the driver to switch from
continuous to single capture mode (or the other way around) when the
driver is stalled by userspace not feeding it buffers as fast as it
consumes it.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This only moves whole structs, defines and functions around, no code is
changed inside any function. The reason for moving this code around is
to prepare for refactoring and fixing of a start/stop stream bug without
having to use forward declarations.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It's possible to grab frames using only one buffer, this should never
have been set to anything else then 1.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use information about pad index when enumerating mbus codes.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Information about pads will be needed when enumerating the media bus
codes in the async complete handler which is run before
rvin_v4l2_probe(). Move the pad lookup to the async bound handler so
they are available when needed.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
[hans.verkuil@cisco.com: fix typo: surce -> source]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The pad lookup code can be broken out to increase readability and to
reduce code duplication.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It makes more sense to store the sink and source pads in struct
rvin_graph_entity since that contains other subdevice related
information.
The data type to store pad information in is unsigned int and not int,
change this. While we are at it drop the _idx suffix from the names,
this never made sense.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Merge tag 'media/v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
"Some bug fixes:
- Don't fail build if atomisp has warnings
- Some CEC Kconfig changes to allow it to be used by DRM without
media dependencies
- A race fix at RC initialization code
- A driver fix at rainshadow-cec
IMHO, the one that affects most people in this series is a build fix:
if you try to build the Kernel with W=1 or using gcc7 and
all[yes|mod]config, build will fail due to -Werror at atomisp
makefiles"
* tag 'media/v4.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] rc-core: race condition during ir_raw_event_register()
[media] cec: drop MEDIA_CEC_DEBUG
[media] cec: rename MEDIA_CEC_NOTIFIER to CEC_NOTIFIER
[media] cec: select CEC_CORE instead of depend on it
[media] rainshadow-cec: ensure exit_loop is intialized
[media] atomisp: don't treat warnings as errors
The driver supports a single input only, which can be either analog or
digital. If the subdevice supports dv_timings_cap the input is digital
and the driver should not fill in the standard.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The rcar-vin driver only uses one pad, pad number 0.
- All v4l2 operations that did not check that the requested operation
was for pad 0 have been updated with a check to enforce this.
- All v4l2 operations that stored (and later restored) the requested pad
before substituting it for the subdevice pad number have been updated
to not store the incoming pad and simply restore it to 0 after the
subdevice operation is complete.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use rvin_reset_format() in rvin_s_dv_timings() instead of just resetting
a few fields. This fixes an issue where the field format was not
properly set after S_DV_TIMINGS.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
These two were forgotten when refactoring the format reset code. If
they are not also reset at the same time as width and height the format
returned from G_FMT will not match reality.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
All drivers have been converted from V4L2 OF to V4L2 fwnode. The V4L2 OF
framework is now unused. Remove it.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Switch users of the v4l2_of_ APIs to the more generic v4l2_fwnode_ APIs.
Async OF matching is replaced by fwnode matching and OF matching support
is removed.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Benoit Parrot <bparrot@ti.com> # i2c/ov2569.c, am437x/am437x-vpfe.c and ti-vpe/cal.c
Tested-by: Hans Verkuil <hans.verkuil@cisco.com> # Atmel sama5d3 board + ov2640 sensor
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Pass the more generic fwnode_handle to the init function than the
device_node.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add fwnode matching to complement OF node matching. And fwnode may also be
an OF node.
Do not enable fwnode matching yet. It will replace OF matching soon.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The fwnode_handle is a more generic way than OF device_node to describe
firmware nodes. Instead of the OF API, use more generic fwnode API to
obtain the same information.
As the V4L2 fwnode support will be required by a small minority of e.g.
ACPI based systems (the same might actually go for OF), make this a module
instead of embedding it in the videodev module.
The origins of the V4L2 fwnode framework is in the V4L2 OF framework.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Inlining these functions into the probe function makes it much
more readable.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
These functions are too short and removing them makes the code more
readable.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several error paths do not free up resources. This simplifies the code
and fixes this.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
If the probe fails (e.g. port already in use), rmmod causes null deref.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The key_addr member is only assigned, never used. So, remove it.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Just some debug statements to change.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Changing the protocol does not imply that the keymap changes.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The REP_DELAY setting on the input device is independent of hardware.
This change should not change how to driver works (as it does a
keydown/keyup and has no real repeat handling).
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Remove superfluous includes and defines.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Most drivers return both values when the device is gone.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The "debug" parameter isn't actually used anywhere.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
device_add() and friends already manage the references to the parent
device so these calls aren't necessary.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
These two functions only make the logic in lirc_register_driver()
harder to follow.
(Note that almost no other driver calls kobject_set_name() on their cdev
so I simply removed that part).
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Merging the two means that lirc_allocate_buffer() is called before
device_add() and cdev_add() which makes more sense. This also
simplifies the locking slightly because lirc_allocate_buffer() will
always be called with lirc_dev_lock held.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Every caller of lirc_register_driver() passes their own fops and there
are no users of lirc_dev_fop_write() in the kernel tree. Thus we can
make fops mandatory and remove lirc_dev_fop_write().
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
out_sysfs is misleading, sysfs only comes into play after device_add().
Also, calling device_init() before the rest of struct dev is filled out
is clearer.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are no drivers which use this functionality.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since there are no users of this functionality, it can be removed
altogether.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drv->set_use_inc and drv->set_use_dec are already optional so we can
remove all dummy functions.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
RX -EPIPE failure with infinite loop and flooding of
[ 2851.966506] mceusb 1-1.2:1.0: Error: urb status = -32
log message at 8000 messages per second.
Bug trigger appears to be normal, but heavy, IR receiver use.
Driver and Linux host become unusable after error.
Also seen at https://sourceforge.net/p/lirc/mailman/message/34886165/
Fix:
Message reports RX usb halt (stall) condition requiring usb_clear_halt()
call in non-interrupt context to recover. Add driver workqueue call to
perform this recovery based on method in use for the usbnet device driver.
Signed-off-by: A Sun <as1033x@comcast.net>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On the Amlogic SoCs, the bootloader firmware can handle the IR hardware
in order to Wake up or Power back the system when in suspend on
shutdown mode.
This patch switches the hardware configuration in a state usable by the
firmware to permit powering the system back.
Some vendor bootloader firmware were modified to switch to this
configuration but it may not be the case for all available products.
This patch was originally posted at [1].
[1] https://github.com/LibreELEC/linux-amlogic/pull/27
Signed-off-by: Alex Deryskyba <alex@codesnake.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch fixes meson-it driver by storing event without processing
to avoid losing key pressed events when system is loaded and events
are occurring too fast.
This issue was reported at [1]
[1] https://github.com/LibreELEC/linux-amlogic/pull/42
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The Kconfig format is strict enough where if the indentation isn't
correct then the "make menuconfig" will break.
Fix the indentation to match all the other entries.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Switch the interrupt description to the default which is the of node
name. This is more in line with the interrupt descriptions in
other meson drivers.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
We don't need the memory barriers here and an interrupt handler should
be as fast as possible. Therefore switch to readl_relaxed.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Switch to the managed versions of rc_allocate_device/rc_register_device,
thus simplifying the code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Make use of the bitfield macros thus partially hiding the complexity
of dealing with bitfields.
The patch also includes a minor fix to REG0_RATE_MASK, so far it was
set to bit 0..10, but according to the spec it's bit 0..11.
[mchehab@s-opensource.com: readd REG1_MODE_SHIFT and REG2_MODE_SHIFT
that got removed on the original patch, as this will be used on
another patch]
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The irq number is used in the probe function only, therefore just use
a local variable.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some dev_dbg messages are misleading. Some dev_dbg messages have
inconsistent formatting. mceusb_dev_printdata() prints incorrect range
of bytes (0 to len) in buffer which the driver will actually process next.
Signed-off-by: A Sun <as1033x@comcast.net>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Intermittent RX truncation and loss of IR received data. This resulted
in receive stream synchronization errors where driver attempted to
incorrectly parse IR data (eg 0x90 below) as command response.
[ 3969.139898] mceusb 1-1.2:1.0: processed IR data
[ 3969.151315] mceusb 1-1.2:1.0: rx data: 00 90 (length=2)
[ 3969.151321] mceusb 1-1.2:1.0: Unknown command 0x00 0x90
[ 3969.151336] mceusb 1-1.2:1.0: rx data: 98 0a 8d 0a 8e 0a 8e 0a 8e 0a 8e 0a 9a 0a 8e 0a 0b 3a 8e 00 80 41 59 00 00 (length=25)
[ 3969.151341] mceusb 1-1.2:1.0: Raw IR data, 24 pulse/space samples
[ 3969.151348] mceusb 1-1.2:1.0: Storing space with duration 500000
Bug trigger appears to be normal, but heavy, IR receiver use.
Signed-off-by: A Sun <as1033x@comcast.net>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Trivial fix to spelling mistake in dev_err message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Initialize scalar variables _pid_ and _ver_ to avoid a possible misbehavior.
Addresses-Coverity-ID: 1324239
Addresses-Coverity-ID: 1324240
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As of commit bb475230b8 ("reset: make optional functions really
optional"), the reset framework API calls use NULL pointers to
describe optional, non-present reset controls.
This allows to return errors from devm_reset_control_get_optional
without special cases and to call reset_control_reset unconditionally.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch provide only digital support;
The device is based on 24C02N EEPROM, Panasonic MN88473 demodulator,
Rafael Micro R828D tuner and CX23102-11Z chipset;
USB id: 15f4:0135.
Status:
- DVB-T/T2 works fine;
- Composite works fine;
- Analog not implemented.
Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
For reasons unclear, we intermittently see a case where the tune
is successful but the bulk stream fails to deliver any packets.
Add a timer to automatically stop/start the data pump if we
encounter such a case.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
We need to set the initial modulation on driver setup, or else any
calls to GET_FRONTEND prior to the first SET_FRONTEND call will get
back garbage.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The xc5000 driver should not be spinning waiting for an analog lock.
The ioctl() should be returning immediately and the application is
responsible for polling for lock status.
This behavior isn't very visible in cases where you tune to a valid
channel, since lock is usually achieved much faster than 400ms.
However it is highly visible where doing things like changing video
standards, which sends tuning request for a frequency that is
almost never going to have an actual channel on it.
Also fixup the return values to treat zero as success and an actual
error code on error (to be consistent with other functions). Note
this change has no practical effect at this time as none of the
callers inspect the return value.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Only looking at the lock register causes the status to float
between locked and not locked when there is no signal. So improve
the logic to also examine the state of the FSC PLL, which results
in the lock status being consistently reported.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The second highest bit in the register value is an indicator to do
a register read, so remove it since now au8522_regread() inserts
the bit automatically.
Also remove a stray instance where we were actually trying to write
to the I2C status register, which was actually a read.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The leading bit in register values is actually an indicator as to
whether to perform a read or write, so remove the bit from the
register values, since the au8522_writereg() is now responsible
for adding this bit automatically.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
I got this working a couple of years ago. Remove it from the
list of known issues.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The original code was based on my reverse engineering of an I2C trace
of the Windows driver. Now that I know what the registers actually do,
restructure the code a bit, removing some unneeded register programming
and fixing the sequencing of operations.
This reduces the time it takes to change inputs from 1300ms down to
600ms (as measured by "time v4l2-ctl -i 0")
Note this does not address outstanding issues related to the management
of the module clocks and power control for the various blocks, which
will be done in a separate patch.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some stray lines got inserted into the driver when I reverse engineered
the I2C traffic (at the time I didn't know what the registers did).
It turns up these registers muck with the onboard I2C master, which
we don't use since we instead use the I2C gate. Remove the lines
which can actually interfere with the operation of the bus.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since we don't suppoort sliced VBI with the au0828/au8522, there is
no need to configure the au8522 VBI slicer, which because of the
coefficients requires a large amount of i2c traffic.
Remove the relevant code. Note that this has no effect on raw VBI
support, which is currently the only supported way to access VBI on
this device.
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Minor fixes in comments
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Hardware could support up to 16 logical addresses which is more
than needed by CEC specifications.
Let use CEC_MAX_LOG_ADDRS instead of limited it on one.
stih_cec_adap_log_addr() function was alredy written to support
multiple addresses requests.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add the missing endianness conversions to a debug call printing the
USB device-descriptor idVendor and idProduct fields during probe.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The VIDIOC_G/S_EDID ioctls can return valid data even if an error is returned.
Mark those ioctls accordingly. Rather than using an explicit 'if' to check for the
ioctl (as was done until now for VIDIOC_QUERY_DV_TIMINGS) just set a new flag in the
v4l2_ioctls array.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
In 'commit 295ab497d6 ("[media] media: platform: pxa_camera: make
printk consistent")' a pointer to the device structure in
mclk_get_divisor() was changed to pcdev_to_dev(pcdev). The pointer used
by pcdev_to_dev() is still uninitialized during the call to
mclk_get_divisor() as it happens in v4l2_device_register() at the end
of the probe. The dev_warn and dev_dbg caused a line in the log:
(NULL device *): Limiting master clock to 26000000
Fix this by using an initialized pointer from the platform_device
(as before the old patch).
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The v4l2-compliance complains about nonexistent vidioc_subscribe_event
and vidioc_unsubscribe_event calls. Add them to fix the complaints.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
During the transfer from the soc_camera a test in pxa_mbus_image_size()
got removed. Without it any PXA_MBUS_LAYOUT_PACKED format causes either
the return of a wrong value (PXA_MBUS_PACKING_2X8_PADHI doubles
the correct value) or EINVAL (PXA_MBUS_PACKING_NONE and
PXA_MBUS_PACKING_EXTEND16). This was observed in an error from the ffmpeg
(for some of the YUYV subvariants).
This patch re-adds the same test as in soc_camera version.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch adds Bayer 8 GBRG and RGGB support and move GRBG definition
close to BGGR (so all Bayer 8 variants are together). No other changes are
needed as the driver handles them as RAW data stream.
The RGGB variant was tested in a modified OV9640 driver.
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Permits distinguishing between two /dev/videoX entries from the same
physical UVC device (that naturally share the same iProduct name).
This change matches current Windows behavior by prioritizing iFunction
over iInterface, but unlike Windows it displays both iProduct and
iFunction/iInterface strings when both are available.
Signed-off-by: Peter Boström <pbos@google.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add the probe def quirk for the webcam found in the Apple MacBook Pro
2016, to get it working out of the box.
Signed-off-by: Daniel Roschka <danielroschka@phoenitydawn.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
- avoid duplicate debugging messages in em28xx_read_reg_req_len()
- do not describe successful usb transfers in em28xx_read_reg_len()
as "failed"
- report errors in em28xx_write_regs_req(), too
- print the usb error numbers, too
Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
trivial fix to spelling mistake and add in a white space in
a CX18_ERR error message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
In functions cx25840_initialize(), cx231xx_initialize(), and
cx23885_initialize(), the return value of create_singlethread_workqueue()
is used without validation. This may result in NULL dereference and cause
kernel crash. This patch fixes it.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Function pci_find_ext_capability() may return 0, which is an invalid
address. In function cobalt_pcie_status_show(), its return value is used
without validation. This patch adds checks to validate the return
address.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Function kthread_create() returns an ERR_PTR on error. However, in
function s5k83a_start(), its return value is used without validation.
This may result in a bad memory access bug. This patch fixes the bug.
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Sakari Ailus
Steve Longerbeam
Philipp Zabel
Mauro Carvalho Chehab
Ramesh Shanmugasundaram
Hans Verkuil
Hans Verkuil
Johannes Berg
Dave Airlie
Linus Torvalds
Gustavo A. R. Silva
Nicholas Mc Guire
Thibault Saunier
Benjamin Gaignard
Colin Ian King
Alexandre Courbot
David Härdeman
Sean Young
Laurent Pinchart
Magnus Damm
Wolfram Sang
Jasmin Jessich
Hirokazu Honda
Daniel Kurtz
Jia-Ju Bai
Kevin Hilman
Anton Blanchard
Johan Hovold
Dave Stevenson
Hans Verkuil
Arvind Yadav
Hugues Fruchet
Steven Toth
Nori, Sekhar
Ulrich Hecht
Niklas Söderlund
A Sun
Alex Deryskyba
Jonas Karlman
Devin Heitmueller
Heiner Kallweit
Andi Shyti
Oleh Kravchenko
Rene Hickersberger
Petr Cvek
Peter Boström
Daniel Roschka
Frank Schaefer
Pan Bian