The references in Intel IPU3 Bayer format documentation were wrong. Fix
them.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The "reserved" field was a way, used at V4L2 API, to add new
data to existing structs without breaking userspace. However,
there are now clever ways of doing that, without needing to add
an uneeded overhead. So, get rid of them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
5 new ioctls were added to the DVB demux API, in order to
handle memory maped I/O. Add documentation for them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
With the new dmx mmap interface, those two syscalls are now
handled by the subsystem. Document them.
This patch is based on the V4L2 text for those ioctls.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit adds a new property DTV_SCRAMBLING_SEQUENCE_INDEX.
This 18 bit field, when present, carries the index of the DVB-S2 physical
layer scrambling sequence as defined in clause 5.5.4 of EN 302 307.
There is no explicit signalling method to convey scrambling sequence index
to the receiver. If S2 satellite delivery system descriptor is available
it can be used to read the scrambling sequence index (EN 300 468 table 41).
By default, gold scrambling sequence index 0 is used. The valid scrambling
sequence index range is from 0 to 262142.
Increase the DVB API version in order userspace to be aware of the changes.
Signed-off-by: Athanasios Oikonomou <athoik@gmail.com>
Acked-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The semantics for lirc IR transmit with raw IR is that the write call
should block until the IR is transmitted. Some drivers have no idea
when this actually is (e.g. mceusb), so there is a wait.
This is useful for userspace, as it might want to send a IR button press,
a gap of a predefined number of milliseconds, and then send a repeat
message.
It turns out that for transmitting scancodes this feature is even more
useful, as user space has no idea how long the IR is. So, maintain
the existing semantics for IR scancode transmit.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The description of V4L2_DV_FL_HALF_LINE mixed up frontporch with backporch.
It's the backporch that has different sizes for interlaced formats, the frontporch
remains constant.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This is part of the uAPI. Add it to the documentation again,
and fix cross-references.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sean Young <sean@mess.org>
Lirc supports a new mode which requires documentation.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
LIRCCODE is a lirc mode where a driver produces driver-dependent
codes for receive and transmit. No driver uses this any more. The
LIRC_GET_LENGTH ioctl was used for this mode only.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- Documentation for digital TV (both kAPI and uAPI) are now in sync
with the implementation (except for legacy/deprecated ioctls). This
is a major step, as there were always a gap there
- New sensor driver: imx274
- New cec driver: cec-gpio
- New platform driver for rockship rga and tegra CEC
- New RC driver: tango-ir
- Several cleanups at atomisp driver
- Core improvements for RC, CEC, V4L2 async probing support and DVB
- Lots of drivers cleanup, fixes and improvements.
* tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (332 commits)
dvb_frontend: don't use-after-free the frontend struct
media: dib0700: fix invalid dvb_detach argument
media: v4l2-ctrls: Don't validate BITMASK twice
media: s5p-mfc: fix lockdep warning
media: dvb-core: always call invoke_release() in fe_free()
media: usb: dvb-usb-v2: dvb_usb_core: remove redundant code in dvb_usb_fe_sleep
media: au0828: make const array addr_list static
media: cx88: make const arrays default_addr_list and pvr2000_addr_list static
media: drxd: make const array fastIncrDecLUT static
media: usb: fix spelling mistake: "synchronuously" -> "synchronously"
media: ddbridge: fix build warnings
media: av7110: avoid 2038 overflow in debug print
media: Don't do DMA on stack for firmware upload in the AS102 driver
media: v4l: async: fix unregister for implicitly registered sub-device notifiers
media: v4l: async: fix return of unitialized variable ret
media: imx274: fix missing return assignment from call to imx274_mode_regs
media: camss-vfe: always initialize reg at vfe_set_xbar_cfg()
media: atomisp: make function calls cleaner
media: atomisp: get rid of storage_class.h
media: atomisp: get rid of wrong stddef.h include
...
That section is too outdated and got superseded by DVBv5 and
by libdvbv5.
Maybe some day we'll end adding updated examples there, but
while nobody has time or interest of doing that, just mention
that there and get rid of the current examples for good.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are several problems with regards to the return of
FE_SET_PROPERTY. The original idea were to return per-property
return codes via tvp->result field, and to return an updated
set of values.
However, that never worked. What's actually implemented is:
- the FE_SET_PROPERTY implementation doesn't call .get_frontend
callback in order to get the actual parameters after return;
- the tvp->result field is only filled if there's no error.
So, it is always filled with zero;
- FE_SET_PROPERTY doesn't call memdup_user() nor any other
copy_to_user() function. So, any changes to the properties
will be lost;
- FE_SET_PROPERTY is declared as a write-only ioctl (IOW).
While we could fix the above, it could cause regressions.
So, let's just assume what the code really does, updating
the documentation accordingly and removing the logic that
would update the discarded tvp->result.
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
CEC_TX_STATUS_ERROR can be used if the HW cannot tell LOST_ARB and
LOW_DRIVE apart, or when some other error occurs. It is not a
replacement for NACK.
So the hardware must be able to tell the difference between OK, NACK and
'something else'.
Clarify the documentation (both public and kernel API) on this point.
Also fix two small typos (this messages -> this message).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The documentation talked about INITIAL_VALUE when the actual define is
INITIAL_STATE.
Fix this.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Jonas Karlman <jonas@kwiboo.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's a chapter for the legacy APIs. Move the frontend DVBv3
API to it, and update the chapter's introduction accordingly.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Adjust the table to be better displayed on PDF output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There appears to be an issue in using \small in certain cases on Sphinx
1.4 and 1.5. Other format documents don't use \small either, remove it
from here as well.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
[mchehab@s-opensource.com: kept tabularcolumns - readjusted - and
add a few blank lines for it to display better]
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On several tables, the color sample location table preamble is
written as:
Color Sample Location..
Instead of:
Color Sample Location:
I suspect that the repetition of such pattern was due to some
copy-and-paste (or perhaps some error during DocBook conversion).
Anyway, fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While doing a visual inspection with Sphinx 1.5, I noticed that
one of the columns was smaller than the text written there.
As this is the only thing I noticed with Sphinx 1.5, I suspect
that this was also a problem with Sphinx 1.4. Yet, I opted to
touch it in a way that wouldn't cause backward issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
It doesn't make any sense having a driver programming's chapter
at the uAPI book, as this is related to kernel API. Also,
we now have such kAPI book where V4L2 driver programming is covered.
So, get rid of this left-over.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's an important note there, but it is not using the
ReST markup. So, it doesn't get any visual highlight on
the output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The "Table of Contents" of a PDF file is generated only once,
at the beginning fo the output. It doesn't produce it on
each part.
So, don't output this text on each part of the document.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several tables at this media book chapter have issues
when PDF is produced. Adjust them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
A literal box provides a better visual when pdf and html output
is generated for things like the output of a sysfs devnode.
It alsod matches other conventions used within the media book.
So, use it.
While here, use literals for protocol names.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Commit 70b074df4e ("media: fix pdf build with Spinx 1.6") caused
a regression at Sphinx 1.4 PDF build: although it produces a full
document in batch mode, it returns errors on interactive mode:
[63]
Runaway argument?
{\relax
! Paragraph ended before \multicolumn was complete.
<to be read again>
\par
l.7703 \hline\end{tabulary}
The error seems to be due to some bug at Sphinx PDF output:
when multicolumns is used, it doesn't accept an empty string.
Just removing the :cpan:`1` and replacing by two empty
columns fix the issue.
Fixes: 70b074df4e ("media: fix pdf build with Spinx 1.6")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On tests with Spinx 1.4, some tables are still writing text
outside cells. Adjust those tables.
PS.: As this was revisited several times, I suspect that this
will only be fully fixed if we add tabularcolumns to all tables
at the V4L2 part of the book.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The Tuner Audio Matrix table is broken: the first row has 7
columns instead of 6, causing it to be parsed wrong and displayed
very badly on PDF output.
Fix it and adjust the table to look nice at PDF output
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
In the past, V4L2 versions were 0.x.y, but that changed years
ago. Since Kernel 3.1, however, the numbering schema was changed
to match the Kernel version.
However, the presented example still uses the old numerating
schema, with is a misleading information.
So, update it to the new schema.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several ioctls are missing descriptions for the third argument
of the ioctl() command. They should have a description, as
otherwise the output won't be ok, and will sound like something
is missing.
So, add them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Usually, CA messages are sent/received via reading/writing at
the CA device node. However, two drivers (dst_ca and firedtv-ci)
also implement it via ioctls.
Apparently, on both cases, the net result is the same.
Anyway, let's document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The av7110 driver uses CA_SET_DESCR to store the descrambler
control words at the CA descrambler slots.
Document it.
Thanks-to: Honza Petrouš <jpetrous@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
As we did with frontend.h, ca.h and dmx.h, move the struct
definition to net.h.
That should help to keep it updated, as more stuff gets
added there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Originally, when DVB was introduced, all codecs would be part of
MPEG2 standard. That's not true anymore, as there are a large
number of codec standards used on digital TV nowadays.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The hardware description mentions that some parts are optional.
Make it clearer at the drawing.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This ioctl is supported by the DVB core, but was never
documented.
Add a documentation for it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Do minor editorial changes to improve documentation readability:
- mark literals as such;
- add table markups to hint sizes;
- define what PES means;
- instead of hardcoding devnode numbers to zero (like adapter0/) use a
question mark, to indicate that multiple devnodes may exist;
- add cross-references where useful.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are several missing items at the API history. Yet,
as we're doing a significant change there, add a new entry.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The struct that contains an union of DVB parameters is
called dvb_frontend_parameters (and not FrontendParameters).
Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
In the past, the documentation used to say that, if a CRC error
was found, a "-ECRC" error would be returned. That's not true:
the DVB core will just silently ignore such errors.
So, add an explicit note about that.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The usage of the term "DVB" at the dvb API docs is confusing,
as, right now, it can refer to either the European digital TV
standard or to the subsystem.
So, prefer calling it as "Digital TV" on most places, to avoid
ambiguity.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The device node name for CA is wrong since ever. I suspect
that the name there was before DVBv3 (with was the first API
introduced at the Kernel).
Anyway, use the right name there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are several issues on the return value for ioctls:
- Text is confusing;
- Some error codes don't exist;
- The non-generic error codes should come before the text
that points to the generic error codes;
- Tables don't contain column size hints;
- Some references are not marked as such.
Correct them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This error can be produced at least at the DVB subsystem.
As it is generic enough, document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of having one chapter per file, place all of them at
the same chapter. That better organize the chapters at the uAPI
documentation.
As a side effect, now all uAPI headers are at the same page,
at the html output, with makes easier to use it as a reference
index for the spec.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Right now, the same undocumented structs are on two places:
at ca_data_types.rst and together with their ioctls.
Move them to just one place and use the standard way to
represent them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
While we don't have any documentation for it, based on what's
there at Kaffeine and VDR, it seems that this command should
be issued before start using CA. So, document it as such.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
For most of the stuff there, documenting is easy, as the
header file contains information.
Yet, I was unable to document two data structs:
ca_msg and ca_descr
As those two structs are used by a few drivers, keep them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This ioctl seems to be some attempt to support a feature
at the bt8xx dst_ca driver. Yet, as said there, it
"needs more work". Right now, the code there is just
a boilerplate.
At the end of the day, no driver uses this ioctl, nor it is
documented anywhere (except for "needs more work").
So, get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Due to a mistake, the DVB net chapter was actually broken
into two different chapters. Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The demux documentation is pretty poor nowadays: most of the
structs and enums aren't documented at all.
Add proper kernel-doc markups for them and use it.
Now, the demux API data structures are fully documented :-)
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This seems to be a pure fictional API :-)
It only exists at the DVB book, with no code implemeting it.
So, just get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's no driver currently using it; it is also not
documented about what it would be supposed to do.
So, get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There's a flag defined for Digital TV demux that is not used
anywhere, called DMX_KERNEL_CLIENT. Get rid of it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several frontend properties are specific to a subset of the
delivery systems. Make it clearer when describing each
property.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Now that frontend.h contains most documentation for the frontend,
remove the duplicated information from Documentation/ and use the
kernel-doc auto-generated one instead.
That should simplify maintainership of DVB frontend uAPI, as most
of the documentation will stick with the header file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Both CA and decoders are optional. Also, the presence or
absence has nothing to do on being a PCI card or not.
Nowadays, most hardware leaves the decoders to either the
GPU or to some ISP inside the SoC, instead of implementing
it inside the Digital TV part of the device.
So, change the wording to reflect the hardware changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The references there are only for DVB. Add missing references for
ATSC and ISDB standards.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
On several places at the introduction, a digital TV board and its
kernel support is called as DVB. The reason is simple: by the
time the document was written, there were no other digital TV
standards :-)
Modernize the specs by referring to them as Digital TV.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Recently added FE_NONE to the enum fe_status, so update the
documentation accordingly.
[mchehab@s-opensource.com: change description to actually
reflect what FE_NONE means: no lock of any kind]
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Do some minor editorial changes to make this chapter visually
better, and the example a little bit clearer.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The description of the DVBv5 API was written a long time ago,
where the API was still new, and there were not apps using it.
Now that the API is stable and used by new applications, clarify
that DVBv3 calls should not be used and why.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The ATSC 3.0 uses MPEG Media Transport, with is not currently
supported. Yet, we'll need to implement it sooner or later.
So, mention about it at the specs.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The description of what SEC means fits well as a footnote.
That makes the need of saying that SEC is only for Satellite
when it was mentioned, as the footnote already says that.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The introduction for the frontend chapter is not quite
correct:
- it tells that it supports only three types of
delivery systems, in opposite to three *groups*;
- It adds ISDB-C to the list of supported systems,
but, this is not true.
Fix it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The device numbering for DVB uses "M" and "N" as vars for the
number of the device, but sometimes this is printed using normal
font instead of verbatim.
While here, remove an extra space after quotation marks.
This is a minor cleanup with no changes at the text.
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>
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>
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>
...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 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>
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>
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>
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Merge tag 'media/v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
"Media updates for v4.12-rc1:
- new driver to support mediatek jpeg in hardware codec
- rc-lirc, s5p-cec and st-cec staging drivers got promoted
- hardware histogram support for vsp1 driver
- added Virtual Media Controller driver, to make easier to test the
media controller
- added a new CEC driver (rainshadow-cec)
- removed two staging LIRC drivers for obscure hardware that are too
obsolete
- added support for Intel SR300 Depth camera
- some improvements at CEC and RC core
- lots of driver cleanups, improvements all over the tree
With this series, we're finally getting rid of the LIRC staging
driver. There's just one left (lirc_zilog), with require more care,
as part of its functionality (IR RX) is already provided by another
driver. Work in progress to convert it on the proper way"
* tag 'media/v4.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (304 commits)
[media] ov2640: print error if devm_*_optional*() fails
[media] atmel-isc: Fix the static checker warning
[media] ov2640: add support for MEDIA_BUS_FMT_YVYU8_2X8 and MEDIA_BUS_FMT_VYUY8_2X8
[media] ov2640: fix vflip control
[media] ov2640: fix duplicate width+height returning from ov2640_select_win()
[media] ov2640: add missing write to size change preamble
[media] ov2640: add information about DSP register 0xc7
[media] ov2640: improve banding filter register definitions/documentation
[media] ov2640: fix init sequence alignment
[media] ov2640: make GPIOLIB an optional dependency
[media] xc5000: fix spelling mistake: "calibration"
[media] vidioc-queryctrl.rst: fix menu/int menu references
[media] media-entity: only call dev_dbg_obj if mdev is not NULL
[media] pixfmt-meta-vsp1-hgo.rst: remove spurious '-'
[media] mtk-vcodec: avoid warnings because of empty macros
[media] coda: bump maximum number of internal framebuffers to 17
[media] media: mtk-vcodec: remove informative log
[media] subdev-formats.rst: remove spurious '-'
[media] dw2102: limit messages to buffer size
[media] ttusb2: limit messages to buffer size
...
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Merge tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux
Pull drm u pdates from Dave Airlie:
"This is the main drm pull request for v4.12. Apart from two fixes
pulls, everything should have been in drm-next for at least 2 weeks.
The biggest thing in here is AMD released the public headers for their
upcoming VEGA GPUs. These as always are quite a sizeable chunk of
header files. They've also added initial non-display support for those
GPUs, though they aren't available in production yet.
Otherwise it's pretty much normal.
New bridge drivers:
- megachips-stdpxxxx-ge-b850v3-fw LVDS->DP++
- generic LVDS bridge support.
Core:
- Displayport link train failure reporting to userspace
- debugfs interface cleaned up
- subsystem TODO in kerneldoc now
- Extended fbdev support (flipping and vblank wait)
- drm_platform removed
- EDP CRC support in helper
- HF-VSDB SCDC support in EDID parser
- Lots of code cleanups and header extraction
- Thunderbolt external GPU awareness
- Atomic helper improvements
- Documentation improvements
panel:
- Sitronix and Samsung new panel support
amdgpu:
- Preliminary vega10 support
- Multi-level page table support
- GPU sensor support for userspace
- PRT support for sparse buffers
- SR-IOV improvements
- Non-contig VRAM CPU mapping
i915:
- Atomic modesetting enabled by default on Gen5+
- LSPCON improvements
- Atomic state handling for cdclk
- GPU reset improvements
- In-kernel unit tests
- Geminilake improvements and color manager support
- Designware i2c fixes
- vblank evasion improvements
- Hotplug safe connector iterators
- GVT scheduler QoS support
- GVT Kabylake support
nouveau:
- Acceleration support for Pascal (GP10x).
- Rearchitecture of code handling proprietary signed firmware
- Fix GTX 970 with odd MMU configuration
- GP10B support
- GP107 acceleration support
vmwgfx:
- Atomic modesetting support for vmwgfx
omapdrm:
- Support for render nodes
- Refactor omapdss code
- Fix some probe ordering issues
- Fix too dark RGB565 rendering
sunxi:
- prelim rework for multiple pipes.
mali-dp:
- Color management support
- Plane scaling
- Power management improvements
imx-drm:
- Prefetch Resolve Engine/Gasket on i.MX6QP
- Deferred plane disabling
- Separate alpha support
mediatek:
- Mediatek SoC MT2701 support
rcar-du:
- Gen3 HDMI support
msm:
- 4k support for newer chips
- OPP bindings for gpu
- prep work for per-process pagetables
vc4:
- HDMI audio support
- fixes
qxl:
- minor fixes.
dw-hdmi:
- PHY improvements
- CSC fixes
- Amlogic GX SoC support"
* tag 'drm-for-v4.12' of git://people.freedesktop.org/~airlied/linux: (1778 commits)
drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection
drm/nouveau/secboot/gm20b: fix the error return code in gm20b_secboot_tegra_read_wpr()
drm/nouveau/kms: Increase max retries in scanout position queries.
drm/nouveau/bios/bitP: check that table is long enough for optional pointers
drm/nouveau/fifo/nv40: no ctxsw for pre-nv44 mpeg engine
drm: mali-dp: use div_u64 for expensive 64-bit divisions
drm/i915: Confirm the request is still active before adding it to the await
drm/i915: Avoid busy-spinning on VLV_GLTC_PW_STATUS mmio
drm/i915/selftests: Allocate inode/file dynamically
drm/i915: Fix system hang with EI UP masked on Haswell
drm/i915: checking for NULL instead of IS_ERR() in mock selftests
drm/i915: Perform link quality check unconditionally during long pulse
drm/i915: Fix use after free in lpe_audio_platdev_destroy()
drm/i915: Use the right mapping_gfp_mask for final shmem allocation
drm/i915: Make legacy cursor updates more unsynced
drm/i915: Apply a cond_resched() to the saturated signaler
drm/i915: Park the signaler before sleeping
drm: mali-dp: Check the mclk rate and allow up/down scaling
drm: mali-dp: Enable image enhancement when scaling
drm: mali-dp: Add plane upscaling support
...
The documentation incorrectly mentions MENU and INTEGER_MENU
at struct v4l2_querymenu table as if they were flags. They're
not: they're types.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Remove spurious '-' in the VSP1 hgo table.
This resulted in a weird dot character that also caused
the row to be double-height.
We used to have it on other tables, but we got rid of them
on changeset 8ed29e302d ("[media] subdev-formats.rst: remove
spurious '-'").
Fixes: 14d6653871 ("[media] v4l: Define a pixel format for the R-Car VSP1 1-D histogram engine")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Remove spurious duplicate '-' in the Bayer Formats description. This resulted in a
weird dot character that also caused the row to be double-height.
The - character was probably used originally as indicator of an unused bit, but as the
number of columns was increased it was never used for the new columns.
Other tables do not use '-' either, so just remove it.
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>
Explain when the V4L2_CTRL_FLAG_MODIFY_LAYOUT and
V4L2_CTRL_FLAG_MODIFY_GRABBER flags should be used.
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>
Document this new control flag.
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>
The format is used on the R-Car VSP1 video queues that carry
2-D histogram statistics data.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The format is used on the R-Car VSP1 video queues that carry
1-D histogram statistics data.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The metadata buffer type is used to transfer metadata between userspace
and kernelspace through a V4L2 buffers queue. It comes with a new
metadata capture capability and format description.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@intel.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: removed left-over 'experimental' note]
[hans.verkuil@cisco.com: add newline after _v4l2-meta-format label]
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
V4L2 exposes parameters that influence buffers sizes through the format
ioctls (VIDIOC_G_FMT, VIDIOC_TRY_FMT, VIDIOC_S_FMT, and possibly
VIDIOC_G_SELECTION and VIDIOC_S_SELECTION). Other parameters not part of
the format structure may also influence buffer sizes or buffer layout in
general. One existing such parameter is rotation, which is implemented
by the V4L2_CID_ROTATE control and thus exposed through the V4L2 control
ioctls.
The interaction between those parameters and buffers is currently only
partially specified by the V4L2 API. In particular interactions between
controls and buffers isn't specified at all. The behaviour of the
VIDIOC_S_FMT and VIDIOC_S_SELECTION ioctls when buffers are allocated is
also not fully specified.
This patch clearly defines and documents the interactions between
formats, selections, controls and buffers.
The preparatory discussions for the documentation change considered
completely disallowing controls that change the buffer size or layout,
in favour of extending the format API with a new ioctl that would bundle
those controls with format information. The idea has been rejected, as
this would essentially be a restricted version of the upcoming request
API that wouldn't bring any additional value.
Another option we have considered was to mandate the use of the request
API to modify controls that influence buffer size or layout. This has
also been rejected on the grounds that requiring the request API to
change rotation even when streaming is stopped would significantly
complicate implementation of drivers and usage of the V4L2 API for
applications.
Applications will however be required to use the upcoming request API to
change at runtime formats or controls that influence the buffer size or
layout, because of the need to synchronize buffers with the formats and
controls. Otherwise there would be no way to interpret the content of a
buffer correctly.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-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>
The documentation for video capture and output devices claims that the video standard
ioctls are required. This is not the case, they are only required for PAL/NTSC/SECAM
type inputs and outputs. Sensors do not implement this at all and e.g. HDMI inputs
implement the DV Timings ioctls.
Just drop the mention of 'video standard' ioctls.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Provide the frame structure and data layout of V4L2-PIX-FMT-INZI
format utilized by Intel SR300 Depth camera.
Signed-off-by: Evgeni Raikhel <evgeni.raikhel@intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The V4L2_INPUT_TYPE_CAMERA and V4L2_OUTPUT_TYPE_ANALOG descriptions were
hopelessly out of date. Fix this, and also fix a few style issues in these
documents. Finally add the missing documentation for V4L2_OUTPUT_TYPE_ANALOGVGAOVERLAY
(only used by the zoran driver).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add the line "Camera sensors are also considered to be a video input."
In practice all non-MC drivers for sensors support the input ioctls, and the
compliance test actually tests for the presence of these ioctls. So clarify
the documentation by explicitly mentioning sensors.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add documentation for added Bus Formats to describe RGB and YUV formats used
as input to the Synopsys DesignWare HDMI TX Controller.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1491230558-10804-4-git-send-email-narmstrong@baylibre.com
LIRC_MODE_MODE2 and LIRC_MODE_LIRCCODE were not covered at all.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Skipping, which is sometimes used in terminology related to sensors when
referring to sub-sampling is replaced by more suitable sub-sampling
instead. Skipping is retained in a note in parentheses.
Suggested-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Even when the CEC device is unconfigured due to an invalid physical
address it is still allowed to send a message from 0xf (Unregistered)
to 0 (TV). This is a corner case explicitly allowed by the CEC specification.
Document this corner case.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Document all the various error codes returned by the CEC ioctls.
These were never documented, instead the documentation relied on a reference
to the generic error codes, but that's not sufficient.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fixed a few spelling mistakes, but mostly incorrect rst syntax that caused wrong
references or font style.
No actual documentation changes, just fixes.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The xvYCC601/709 encodings were mapped by default to full range quantization.
This is actually wrong since these encodings use limited range quantization,
but accept values outside of the limited range.
This makes sense since for values within the limited range it behaves exactly
the same as BT.601 or Rec. 709. The only difference is that with the xvYCC
encodings the values outside of the limited range also produce value colors.
Talking to people who know a lot more about this than I do made me realize
that mapping xvYCC to full range quantization was wrong, so this patch corrects
this and also improves the documentation.
These formats are very rare, and since the formula for decoding these Y'CbCr
encodings is actually fixed and independent of the quantization field value
it is safe to make this change.
The main advantage is that keeps the V4L2 specification in sync with the
corresponding colorspace, HDMI and CEA861 standards when it comes to these
xvYCC formats.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Now that we have an extension to handle images, use it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The new picture_aspect, cea861_vic and hdmi_vic fields were not documented,
even though the corresponding flags were.
Add documentation for these new fields.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix typos and add the following to the scripts/spelling.txt:
an union||a union
Link: http://lkml.kernel.org/r/1481573103-11329-5-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Merge tag 'v4.10' into patchwork
Linux 4.10
* tag 'v4.10': (1558 commits)
Linux 4.10
Fix missing sanity check in /dev/sg
scsi: don't BUG_ON() empty DMA transfers
ipv6: release dst on error in ip6_dst_lookup_tail
printk: use rcuidle console tracepoint
ARM: multi_v7_defconfig: enable Qualcomm RPMCC
irda: Fix lockdep annotations in hashbin_delete().
vxlan: fix oops in dev_fill_metadata_dst
dccp: fix freeing skb too early for IPV6_RECVPKTINFO
dpaa_eth: small leak on error
packet: Do not call fanout_release from atomic contexts
reset: fix shared reset triggered_count decrement on error
ntb: ntb_hw_intel: link_poll isn't clearing the pending status properly
ntb_transport: Pick an unused queue
ntb: ntb_perf missing dmaengine_unmap_put
NTB: ntb_transport: fix debugfs_remove_recursive
Revert "nohz: Fix collision between tick and other hrtimers"
vfs: fix uninitialized flags in splice_to_pipe()
drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor
ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()
...
This reverts 'commit 7e0739cd9c ("[media] videodev2.h: fix
sYCC/AdobeYCC default quantization range").
The problem is that many drivers can convert R'G'B' content (often
from sensors) to Y'CbCr, but they all produce limited range Y'CbCr.
To stay backwards compatible the default quantization range for
sRGB and AdobeRGB Y'CbCr encoding should be limited range, not full
range, even though the corresponding standards specify full range.
Update the V4L2_MAP_QUANTIZATION_DEFAULT define accordingly and
also update the documentation.
Fixes: 7e0739cd9c ("[media] videodev2.h: fix sYCC/AdobeYCC default quantization range")
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v4.9 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Document the EIO error since this can happen anywhere anytime and applications
should be aware of this.
Also fix typo: exaustive -> exhaustive
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>
For IR wakeup, a driver has to program the hardware to wakeup at a
specific IR sequence, so it makes no sense to allow multiple wakeup
protocols to be selected. In the same manner the sysfs interface only
allows one scancode to be provided.
In addition, we need to know the specific variant of the protocol.
In short, these changes are made to the wakeup_protocols sysfs entry:
- list all the protocol variants rather than the protocol groups,
e.g. "nec nec-x nec-32" rather than just "nec".
- only allow one protocol variant to be selected rather than multiple
- wakeup_filter can only be set once a protocol has been selected in
wakeup_protocols.
This is an API change, however the only user of this API is the img-ir,
but the wakeup code was never merged to mainline, so it was never used.
Signed-off-by: Sean Young <sean@mess.org>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Sifan Naeem <sifan.naeem@imgtec.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Mention where to find the CEC utilities.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The API is now finalized, so this notice should be dropped.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* patchwork: (496 commits)
[media] v4l: tvp5150: Add missing break in set control handler
[media] v4l: tvp5150: Don't inline the tvp5150_selmux() function
[media] v4l: tvp5150: Compile tvp5150_link_setup out if !CONFIG_MEDIA_CONTROLLER
[media] em28xx: don't store usb_device at struct em28xx
[media] em28xx: use usb_interface for dev_foo() calls
[media] em28xx: don't change the device's name
[media] mn88472: fix chip id check on probe
[media] mn88473: fix chip id check on probe
[media] lirc: fix error paths in lirc_cdev_add()
[media] s5p-mfc: Add support for MFC v8 available in Exynos 5433 SoCs
[media] s5p-mfc: Rework clock handling
[media] s5p-mfc: Don't keep clock prepared all the time
[media] s5p-mfc: Kill all IS_ERR_OR_NULL in clocks management code
[media] s5p-mfc: Remove dead conditional code
[media] s5p-mfc: Ensure that clock is disabled before turning power off
[media] s5p-mfc: Remove special clock rate management
[media] s5p-mfc: Use printk_ratelimited for reporting ioctl errors
[media] s5p-mfc: Set DMA_ATTR_ALLOC_SINGLE_PAGES
[media] vivid: Set color_enc on HSV formats
[media] v4l2-tpg: Init hv_enc field with a valid value
...
Instead of keeping both SVG and graphviz files, dynamically
build SVG from its graphviz sources.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
SVG images are scalable, with makes easier to output on
different formats.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
bitmap images don't scale too well. So, replace it by a SVG
image, written in inkscape. I'm using the 2009's temporary
logo.svg image from 8032b526d1 ("linux.conf.au 2009: Tuz"),
with a Tasmanian Devil wearing a tux mask.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The pipeline image was produced from some dot file that has
long missed. Create a pipeline.dot with the graph and convert
it to SVG. As we're planning to add future support for graphviz
graphics, also store the .dot file on the tree, as this will
make easier when we add such Sphinx extension.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Instead of using bitmap images to show the zigzag macroblock
parsing, replace it by a SVG ones, with is scalable.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Use sans-serif font on all documents, split text lines,
ungroup elements, and do other misc cleanups, in order to make
all of them to look better, and to have smaller columns inside
their lines.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Using vectorial graphics provide a better visual. As those images
are originally using a vectorial graphics input at the pdf files,
use them, from an old media tree repository, converting them to SVG.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The documentation simply mentioned that one of the four pixel orders was
used in the example. Now specify the exact pixelformat instead.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The formats added by this patch are:
V4L2_PIX_FMT_SBGGR16
V4L2_PIX_FMT_SGBRG16
V4L2_PIX_FMT_SGRBG16
V4L2_PIX_FMT_SRGGB16 already existed before the patch. Rework the
documentation to match that of the other sample depths.
Also align the description of V4L2_PIX_FMT_SRGGB16 to match with other
similar formats.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix a typo on a word inside it.
Signed-off-by: Andrea Gelmini <andrea.gelmini@gelma.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The SVG files are larger than the draw dimentions, have long
lines and aren't cleaned. Use inkscape to automatically fix
those issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The PDF files that contain media images were actually generated
offline from their SVG or PNG source files.
Sphinx can handle PNG sources automatially. So, let's just
drop their PDF counterparts.
For SVG, however, Sphinx doesn't produce the right tags to
use the TexLive SVG support. Also, the SVG support is done via
shell execution, with is not nice.
So, while we don't have any support for SVG inside Sphinx
core or as an extension, move the logic to build them to Makefile,
producing the PDF images on runtime.
NOTE: due to the way Sphinx works, the PDF images should be
generated inside the Kernel source tree, as otherwise Sphinx
won't find it, not obeying what's specified by "O=" makefile
parameter.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Right now, media is using two different formats for bitmap
images: GIF and PNG. Let's use just one, to make it simpler when
building with Sphinx.
As PNG is usually better than GIF, let's use it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
SVG images are nicer, as they can easily be scaled. Also, they're
written in text, with makes easier to work.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
There are several missing columns on the size specification,
causing LaTeX to complain on interactive mode.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
adjustbox doesn't work on longtables. Also, this
causes an error on LaTeX in interactive mode.
So, use, instead, a tiny font.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
The menu control selects the operation mode of a video deinterlacer. The
menu entries are driver specific.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran@bingham.xyz>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The CEC_LOG_ADDRS_FL_CDC_ONLY flag is missing at the documentation,
causing this warning:
Documentation/output/cec.h.rst:6: WARNING: undefined label: cec-log-addrs-fl-cdc-only (if the link has no caption the label must precede a section header)
Add a documentation for it, based on the commit that introduced the
flag.
Fixes: a69a168a1b ("[media] cec: add proper support for CDC-Only CEC devices")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The CEC_MSG_INITIATE_ARC message is special since it is the ONLY
CEC message that accepts two possible valid replies:
CEC_MSG_REPORT_ARC_INITIATED and CEC_MSG_REPORT_ARC_TERMINATED.
So if the transmitted message is CEC_MSG_INITIATE_ARC and the remote
side replied with CEC_MSG_REPORT_ARC_INITIATED or CEC_MSG_REPORT_ARC_TERMINATED,
then a msg->reply value of CEC_MSG_REPORT_ARC_INITIATED or
CEC_MSG_REPORT_ARC_TERMINATED will match either reply.
I thought about either adding a second reply2 field, but that's ugly
for all other messages that have only one reply, and what if in the
future a new message is added that can have three replies?
Another option would be to add a cec_msg flag, but really, the combination
of CEC_MSG_REPORT_ARC_INITIATED and a reply value of one of the two
possible replies already functions as a flag.
Another advantage of this approach is that it is safe to re-use a
cec_msg struct. No need to zero a flags field or a reply2 field.
So since this really is an exception in the CEC specification, I
decided to implement it as an exception as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Give the caller more control over how replies to a transmit are
handled. By default the reply will only go to the filehandle that
called CEC_TRANSMIT. If this new flag is set, then the reply will
also go to all followers.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
By default the CEC_MSG_USER_CONTROL_PRESSED/RELEASED messages
are passed on to the follower(s) only. If the new
CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU flag is set in the
flags field of struct cec_log_addrs then these messages are also
passed on to the remote control input subsystem and they will appear
as keystrokes.
This used to be the default behavior, but now you have to explicitly
enable it. This is done to force the caller to think about possible
security issues (e.g. if these messages are used to enter passwords).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This uses Laurent's python script to convert all tables, dropping
the useless 'row' comments.
See commit c2b66cafdf ("[media] v4l: doc: Remove row numbers from tables")
for the script that was used.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The code examples on how to enumerate controls were really long in the
tooth. Update them.
Using FLAG_NEXT_CTRL is preferred these days, so give that example first.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Memory-to-memory V4L2 devices all have file handle specific context.
Say this in the API documentation so that the user space may rely on it
being the case.
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 previous patch renamed several files that are cross-referenced
along the Kernel documentation. Adjust the links to point to
the right places.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Describe the hsv_enc field and its use.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
My initials were on the Changelog, but there was no link to my name.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Improve the MT21C documentation, making it clearer that this format
requires the MDP for further processing.
Also fix the fourcc (it was a fivecc :-) )
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 'v4.8' into patchwork
Linux 4.8
* tag 'v4.8': (1761 commits)
Linux 4.8
ARM: 8618/1: decompressor: reset ttbcr fields to use TTBR0 on ARMv7
MIPS: CM: Fix mips_cm_max_vp_width for non-MT kernels on MT systems
include/linux/property.h: fix typo/compile error
ocfs2: fix deadlock on mmapped page in ocfs2_write_begin_nolock()
mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()
MAINTAINERS: Switch to kernel.org email address for Javi Merino
x86/entry/64: Fix context tracking state warning when load_gs_index fails
x86/boot: Initialize FPU and X86_FEATURE_ALWAYS even if we don't have CPUID
x86/vdso: Fix building on big endian host
x86/boot: Fix another __read_cr4() case on 486
sctp: fix the issue sctp_diag uses lock_sock in rcu_read_lock
sctp: change to check peer prsctp_capable when using prsctp polices
sctp: remove prsctp_param from sctp_chunk
sctp: move sent_count to the memory hole in sctp_chunk
tg3: Avoid NULL pointer dereference in tg3_io_error_detected()
x86/init: Fix cr4_init_shadow() on CR4-less machines
MIPS: Fix detection of unsupported highmem with cache aliases
MIPS: Malta: Fix IOCU disable switch read for MIPS64
MIPS: Fix BUILD_ROLLBACK_PROLOGUE for microMIPS
...
Fix a few indentation issues to enable automated table reorganization
by a regex-based script.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The codes will be called:
MEDIA_BUS_FMT_SBGGR16_1X16
MEDIA_BUS_FMT_SGBRG16_1X16
MEDIA_BUS_FMT_SGRBG16_1X16
MEDIA_BUS_FMT_SRGGB16_1X16
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The V4L2_PIX_FMT_SBGGR16 format is documented to contain samples of fewer
than 16 bits. However, we do have specific definitions for smaller sample
sizes. Therefore, this note is redundant from the API point of view.
Currently only two drivers, am437x and davinci, use the
V4L2_PIX_FMT_SBGGR16 pixelformat currently. The sampling precision is
understood to be 16 bits in all current cases.
Remove the note on sampling precision.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The other raw bayer formats had a single sample depth dependent definition
whereas the 8-bit formats had one page for each. Unify the documentation
of the 8-bit formats.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
- Explicitly state that the most significant n bits are zeroed on 10 and
12 bpp formats.
- Remove extra comma from the last entry of the format list
- Add a missing colon before a list
- Use figures versus word numerals consistently
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>
The number of high order bits in samples was documented to be 6 for 12-bit
data. This is clearly wrong, fix 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>
The 10-bit packed raw bayer format documented that the data of the first
pixel of a four-pixel group was found in the first byte and the two
highest bits of the fifth byte. This was not entirely correct. The two
bits in the fifth byte are the two lowest bits. The second pixel occupies
the second byte and third and fourth least significant bits and so on.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Aviv Greenberg <aviv.d.greenberg@intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
One reference there is still using :ref:. Fix it, to solve this
warning:
Documentation/media/uapi/mediactl/media-ioc-g-topology.rst:236: WARNING: undefined label: media-v2-intf-devnode (if the link has no caption the label must precede a section header)
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The struct v4l2_mpeg_vbi_ITV0 is identical to struct v4l2_mpeg_vbi_itv0,
except by its size, and it is documented at the same place at the
book.
Fix cross reference for it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are several broken references there, due to the conversion to
C domain. Fix them using this shell script and manually adjust what's
broken:
# funcs is a file with the broken functions/references
for i in $(cat funcs|sort|uniq|perl -ne 'print "$1\n" if (m/(\S+)$/)'); do
i=${i//-/_}
echo $i
j=${i//_/-}
for k in $(git grep -l "_$j:" Documentation/); do
sed s,\_$j\:,"c\:type\:\: $i", <$k >a && mv a $k
done
for k in $(git grep -l "$j" Documentation/media/*.exceptions); do
sed s,$j,":c\:type\:\`$i\`", <$k >a && mv a $k
done
for k in $(git grep -l "$j" Documentation/); do
sed "s,:ref:\`$i <$j>\`,:c:type:\`$i\`," <$k >a && mv a $k
sed "s,:ref:\`$j\`,:c:type:\`$i\`," <$k >a && mv a $k
sed -E "s,:ref:\`(.*)<$j>\`,:c:type:\`\1<$i>\`," <$k >a && mv a $k
done
for k in $(git grep -l "<$j>" include/media); do
sed -E "s,:ref:\`(.*)<$j>\`,enum \&$i," <$k >a && mv a $k
done
done
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several structs were renamed or removed during V4L2 development.
Don't try to cross-reference the legacy ones.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Use C cross-references to mention the V4L2 API calls on all
places it occurs inside this file.
While here, also mark constants as such.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix those warnings:
Documentation/media/uapi/cec/cec-ioc-dqevent.rst:124: WARNING: c:func reference target not found: clock_gettime(2)
By replacing it with the right function name, using this shell script:
for i in `find Documentation/media -type f`; do sed 's,clock_gettime(2),clock_gettime,' <$i >a && mv a $i; done
Please notice that this will make the nitpick mode to shut up
complaining about that, becasue clock_gettime is on its exclude list,
but the cross reference will be undefined until someone documents
this function at the core documentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The :c:type: references point to the structure name, and not to
struct foo.
Fixed via this shell script:
for i in `find Documentation/media -type f`; do perl -ne 'if (s/\:c\:type\:\`struct\s*(\S+)\`/struct :c:type:`$1`/) { s/struct\s+struct/struct/; s/(struct\s+\:c\:type\:\`\S+\`)\s+structure/$1/; } print $_' <$i >a && mv a $i; done
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of using c:type:`struct foo <foo>`, use:
struct c:type:`foo`
This patch was generated via this shell script:
for i in `find Documentation/media -type f`; do perl -ne 'if (m/\:c\:type\:\`struct\s+(\S+)\s*\<(\S+)\>\`/) { $s=$1; $r=$2; if ($s eq $r) { s/\:c\:type\:\`struct\s+(\S+)\s*\<(\S+)\>\`/struct :c:type:`$2`/; s/struct\s+struct/struct/; s/(struct\s+\:c\:type\:\`\S+\`)\s+structure/$1/; }} print $_' <$i >a && mv a $i; done
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Sakari Ailus