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: NMauro 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: NMauro 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: NMauro Carvalho Chehab <mchehab@s-opensource.com>

c:type is not the right tag for function definitions.
Replace them by .. c:function::
Signed-off-by: NMauro 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: NMauro 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: NMauro 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: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Fix some CEC cross references that are broken.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Some structs are pointed via the typedef. As we replaced
those references, fix them.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Trivially fix those broken references, by copying the structs
fron the header, just like other API documentation at the
DVB side.

This doesn't have the level of quality used at the V4L2 side
of the API, but, as this documents a deprecated API, used
only by av7110 driver, it doesn't make much sense to invest
time making it better.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Several links are broken, as they were using the typedef
name, instead of using the corresponding structs. Fix them.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Add a table describing the fields on this struct, based
on ca.h header.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Add documentation for struct ca_slot_info and for the two
sets of define used by it, according with what's there at the
ca.h header.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

There are no descriptions at ca.h header for this struct.
Yet, as we want to get rid of the warnings, let's add a
boilerplate, with just the struct types and fields.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The documentation follows what's there at the ca.h header.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Add a flat-table describing struct ca_caps, as found at
the source file.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Now that we moved away from the :ref: type of references,
we need to update the exceptions lists.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/output/cec.h.rst:6: WARNING: c:type reference target not found: cec_event_state_change
Documentation/output/cec.h.rst:6: WARNING: c:type reference target not found: cec_event_state_change
Documentation/output/cec.h.rst:6: WARNING: c:type reference target not found: cec_event_lost_msgs
Documentation/output/cec.h.rst:6: WARNING: c:type reference target not found: cec_event_lost_msgs
Documentation/output/cec.h.rst:6: WARNING: c:type reference target not found: cec_event_state_change
Documentation/output/cec.h.rst:6: WARNING: c:type reference target not found: cec_event_lost_msgs
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Change the parse-headers.pl and the corresponding files to use
the C domain for enum references.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The V4L version 1 structures had long gone from the Linux Kernel.
It doesn't make sense to use cross-references for them, as they
won't be found.

So, get rid of them.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

instead of declaring the uAPI structs using usual refs, e. g.:
	.. _foo-struct:

Use the C domain way:
	.. c:type:: foo_struct

This way, the kAPI documentation can use cross-references to
point to the uAPI symbols.

That solves about ~100 undefined warnings like:
	WARNING: c:type reference target not found: foo_struct
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Fix copy-and-paste error: the radio devices are /dev/radio, not /dev/vbi.
Signed-off-by: NHans Verkuil <&lt;hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

/devel/v4l/patchwork/Documentation/media/uapi/v4l/extended-controls.rst:2116: WARNING: Inline literal start-string without end-string.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

This field was never documented, and neither was it mentioned that
it should be zeroed by the application.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

V4L2_CTRL_FLAG_VOLATILE behaviour when V4L2_CTRL_FLAG_EXECUTE_ON_WRITE
is set was not properly explained.

Also set some hyperlink to ease the Documentation browsing.

Credit-to: Hans Verkuil <hansverk@cisco.com>

[mchehab@s-opensource.com: fix a trivial merge conflict]
Reported-by: NDimitrios Katsaros <patcherwork@gmail.com>
Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Document that the cropping ioctls can return ENODATA if the operation
isn't supported for the current input or output.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Instead of referring to Y', Cb and Cr, it referred to Yc', Cbc and
Crc, which were accidentally copied from the BT.2020 constant luminance
text.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The text of the note included text that shouldn't have been part
of the note. Move that out of the note into the proper place.

[mchehab@s-opensource.com: fix a trivial merge conflict]
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The V4L2_YCBCR_ENC_SYCC encoding is identical to V4L2_YCBCR_ENC_601.
Remove V4L2_YCBCR_ENC_SYCC from the documentation since it should not
be used.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The SYCC Y'CbCr encoding is identical to the 601 encoding. Since the
SYCC define is about to be removed for use in the kernel we need to
drop it in the TPG code as well.

This patch also adds a 4th decimal to the 601 conversion matrix.
That was specified by the sYCC spec and it makes sense to use this
across the board.

[mchehab@s-opensource.com: fix conflicts with LaTeX math expression patch]
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

The default quantization range of the Y'CbCr encodings of sRGB
and AdobeRGB are full range instead of limited range according to
the corresponding standards.

Fix this in the V4L2_MAP_QUANTIZATION_DEFAULT macro.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Document the new touch API.
Signed-off-by: NNick Dyer <nick@shmanahar.org>
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: fix up videodev2.h.rst.exceptions]
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

On some places, either an space or the second ':' is missing.

Fix them.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Name all ioctl references and make them match the ioctls that
are documented. That will improve the cross-reference index,
as it will have all ioctls and syscalls there.

While here, improve the documentation to make them to look more
like the rest of the document.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Name all ioctl references and make them match the ioctls that
are documented. That will improve the cross-reference index,
as it will have all ioctls and syscalls there.

While here, improve the documentation to make them to look more
like the rest of the document.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Name all ioctl references and make them match the ioctls that
are documented. That will improve the cross-reference index,
as it will have all ioctls and syscalls there.

While here, improve the documentation to make them to look more
like the rest of the document.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Name all ioctl references and make them match the ioctls that
are documented. That will improve the cross-reference index,
as it will have all ioctls and syscalls there.

While here, improve the documentation, marking the deprecated
ioctls, and making the non-deprecated ones more like the rest
of the media book.

Also, add a notice for ioctls that still require documentation.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Name all ioctl references and make them match the ioctls that
are documented. That will improve the cross-reference index,
as it will have all ioctls and syscalls there.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Now that we have an override for the c domain that will do
the right thing for the Kernel, stop abusing on the cpp
domain.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Enrich math formulas by using the Sphinx math. That will allow
using those formulas on pdf documents as well.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>