Some CSI-2 transmitters will finish an ongoing frame whereas others will
not. Document that receiver drivers should not assume a particular
behaviour but to work in both cases.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Sphinx 1.6 generates some LaTeX code before each table,
starting its own environment before calling tabulary,
apparently to improve table layout.
The problem is that such environment is incompatible with
adjustbox. While, in thesis, it should be possible to override
it or to redefine tabulary, I was unable to produce such patch.
Also, that would likely break on some future Sphinx version.
So, instead, let's just change the font size on bigger tables,
in order for them to fit into the page size. That is not as
good as adjustbox, and require some manual work, but it should
be less sensitive to Sphinx changes.
While here, adjust a few other tables whose text is exceeding
the cell boundaries.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Update the Qualcomm Camera Subsystem driver document with a media
controller pipeline graph diagram.
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Update Qualcomm Camera Subsystem driver document for the PIX interface
and format conversion support.
Signed-off-by: Todor Tomov <todor.tomov@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
These formats are compressed 12-bit raw bayer formats with four different
pixel orders. They are similar to 10-bit variants. The formats added by
this patch are
V4L2_PIX_FMT_SBGGR12P
V4L2_PIX_FMT_SGBRG12P
V4L2_PIX_FMT_SGRBG12P
V4L2_PIX_FMT_SRGGB12P
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>
The CEC_EVENT_PIN_LOW/HIGH defines and the cec_queue_pin_event() function
did not specify that these were about CEC pin events.
Since in the future there will also be HPD pin events it is wise to rename
the event defines and function to CEC_EVENT_PIN_CEC_LOW/HIGH and
cec_queue_pin_cec_event() now before these become part of the ABI.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The description of how messages are processed by the core was not
always very clear. Reword it to improve this.
In particular for the USER_CONTROL_* messages a critical bit was
missing in that the core also checks for the CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU
flag. This was confusing.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
`CEC_LOG_ADDRS_FL_CDC_ONLY` should be ``CEC_LOG_ADDRS_FL_CDC_ONLY``.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Various references to open() et al were wrong. Fix this so following
the link will get you to the correct place.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Make note of the different luminance ranges between HDR and SDR.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add a note stating that bt.2020 is often used in combination with the
smpte 2084 transfer function.
Also use the right references to the documentation of that transfer
function.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
After the DocBook conversion a number of pixfmt description files just
had a number in the filename (pix-fmt-004, 006, etc) which was not very
descriptive.
Rename them.
Note that pixfmt-008.rst was folded into colorspaces-details.rst, so
that file is deleted. It's easier to maintain that way.
Also moved the colorspace sections to the end of the chapter. The old
order was weird: the "Standard Image Formats" section (an intro into
pixel formats) was followed by the colorspace sections instead of the
pixel format descriptions.
Moving it to the end resolved that issue.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The rectangle which the sink compose rectangle is related to is documented
to be the source compose bounds rectangle. This is in obvious conflict with
the ground rule of the format propagation (from sink to source). The reason
behind this is that this was always supposed to be the sink compose bounds
rectangle. Fix it.
Fixes: 955f645aea ("[media] v4l: Add subdev selections documentation")
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>
Include the CEC pin framework documentation by reading cec-pin.h.
Include the CEC notifier framework documentation by reading cec-notifier.h.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Document what this callback does.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The CEC version, vendor ID and OSD name were not cleared when clearing the
current set of logical addresses. This was unexpected and somewhat confusing,
so reset all these fields to their default values. Also document this since
the documentation wasn't quite clear either.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Sending patches with SVG files via e-mail has a drawback: line
size could be bigger than 998, with is the limit given by
RFC 5322[1]. So, we need to enforce a lower limit, in order to
allow those patches to be properly reviewed.
[1] https://tools.ietf.org/html/rfc5322#section-2.1.1
So, use this small Perl script to limit columns size to ~900.
use Text::Wrap;
$Text::Wrap::columns = 900;
$t.=$_ while (<>);
print wrap("","",$t);
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Debian's ImageMagick is currently unable to decode those
images. Use scour to simplify the SVG, and provide only
one font type, in order to make it more palatable.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This file is too big, with cause it to require a lot
of memory when parsed by texlive.
Optimize it, in order to avoid the need of touching at
main_memory at texmf.cnf.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Merge tag 'v4.13-rc1' into patchwork
Linux v4.13-rc1
* tag 'v4.13-rc1': (11136 commits)
Linux v4.13-rc1
random: reorder READ_ONCE() in get_random_uXX
random: suppress spammy warnings about unseeded randomness
replace incorrect strscpy use in FORTIFY_SOURCE
kmod: throttle kmod thread limit
kmod: add test driver to stress test the module loader
MAINTAINERS: give kmod some maintainer love
xtensa: use generic fb.h
fault-inject: add /proc/<pid>/fail-nth
fault-inject: simplify access check for fail-nth
fault-inject: make fail-nth read/write interface symmetric
fault-inject: parse as natural 1-based value for fail-nth write interface
fault-inject: automatically detect the number base for fail-nth write interface
kernel/watchdog.c: use better pr_fmt prefix
MAINTAINERS: move the befs tree to kernel.org
lib/atomic64_test.c: add a test that atomic64_inc_not_zero() returns an int
mm: fix overflow check in expand_upwards()
ubifs: Set double hash cookie also for RENAME_EXCHANGE
ubifs: Massage assert in ubifs_xattr_set() wrt. init_xattrs
ubifs: Don't leak kernel memory to the MTD
...
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Merge tag 'media/v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- addition of fwnode support at V4L2 core
- addition of a few more SDR formats
- new imx driver to support i.MX6 cameras
- new driver for Qualcon venus codecs
- new I2C sensor drivers: dw9714, max2175, ov13858, ov5640
- new CEC driver: stm32-cec
- some improvements to DVB frontend documentation and a few fixups
- several driver improvements and fixups
* tag 'media/v4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (361 commits)
[media] media: entity: Catch unbalanced media_pipeline_stop calls
[media] media/uapi/v4l: clarify cropcap/crop/selection behavior
[media] v4l2-ioctl/exynos: fix G/S_SELECTION's type handling
[media] vimc: sen: Declare vimc_sen_video_ops as static
[media] vimc: sca: Add scaler
[media] vimc: deb: Add debayer filter
[media] vimc: Subdevices as modules
[media] vimc: cap: Support several image formats
[media] vimc: sen: Support several image formats
[media] vimc: common: Add vimc_colorimetry_clamp
[media] vimc: common: Add vimc_link_validate
[media] vimc: common: Add vimc_pipeline_s_stream helper
[media] vimc: common: Add vimc_ent_sd_* helper
[media] vimc: Move common code from the core
[media] vimc: sen: Integrate the tpg on the sensor
[media] media: i2c: ov772x: Force use of SCCB protocol
[media] dvb uapi docs: enums are passed by value, not reference
[media] dvb: don't use 'time_t' in event ioctl
[media] media: venus: enable building with COMPILE_TEST
[media] af9013: refactor power control
...
VIDIOC_S_FMT may return EBUSY if the device is streaming or there are
buffers allocated. Document this.
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>
A section talking about demod statistics implementation was
recently added, but it seemed to start from nowere, without
a previous description about how a demod driver would look
like.
Add such description, for completeness.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of just start describing the kAPI functions, add
an introduction giving a general line about a DVB driver's
structure.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Avoid the following warning when building documentation:
checking consistency... /devel/v4l/patchwork/Documentation/media/v4l-drivers/imx.rst:: WARNING: document isn't included in any toctree
While here, avoid placing all driver authors at just one line at
the html/pdf output.
Acked-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It is not trivial to implement the logic that collects DVBv5
statistics. As we're seein lately too many implementations
that are not quite right when reviewing patchsets, add a
detailed explanation, adding a few examples about the right
thing to be done.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
...otherwise the PDF build fails when it can't find constraints.pdf.
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Unfortunately the use of 'type' was inconsistent for multiplanar
buffer types. Starting with 4.13 both the normal and _MPLANE variants
are allowed, thus making it possible to write sensible code.
Yes, we messed up :-(
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[hans.verkuil@cisco.com: 4.14 -> 4.13 since this would go in for 4.13 after all]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Since 2015, the documentation for FE_DISEQC_SEND_BURST, FE_SET_TONE
and FE_SET_VOLTAGE are incorrectly saying that the enums are passed
by reference. They aren't: they're passed by value.
Fix the documentation to reflect reality.
Fixes: 81959d996a ("[media] DocBook: better document FE_DISEQC_SEND_BURST ioctl")
Fixes: d6b6d346e5 ("[media] DocBook: better document FE_SET_VOLTAGE ioctl")
Fixes: 6dc59e7a19 ("[media] DocBook: better document FE_SET_TONE ioctl")
Reported-by: Thierry Lelegard <thierry.lelegard@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Elaborate the differences between V4L2_CID_GAIN and gain-type specific
V4L2_CID_DIGITAL_GAIN and V4L2_CID_ANALOGUE_GAIN.
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>
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>
Add the core media driver for i.MX SOC.
Switch from the v4l2_of_ APIs to the v4l2_fwnode_ APIs.
Add the bayer formats to imx-media's list of supported pixel and bus
formats.
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add two new media entity function definitions for video multiplexers
and video interface bridges.
- renamed MEDIA_ENT_F_MUX to MEDIA_ENT_F_VID_MUX
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>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This patch adds documentation for the three new SDR formats
V4L2_SDR_FMT_PCU16BE
V4L2_SDR_FMT_PCU18BE
V4L2_SDR_FMT_PCU20BE
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>
Document the new CEC_CAP_NEEDS_HPD capability.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
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>
Fix what seems to be a few typos induced by copy/paste.
[mchehab@s-opensource.com: fix a typo]
Signed-off-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
V4L2_CID_EXPOSURE_BIAS does not exist, fix documentation.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
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>
Instead of including the V4L2 OF header in ReST documentation, use the
V4L2 fwnode header instead.
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>
