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authorLinus Torvalds <torvalds@linux-foundation.org>2025-07-31 23:16:09 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2025-07-31 23:16:09 +0300
commit0cdee263bc5e7b20f657ea09f9272f50c568f35b (patch)
tree1841bfda91eeb316666fc401c8dca7267ae806e9 /Documentation/userspace-api
parent27152608dab9afe748d6b5fc3437a1831dac77c7 (diff)
parentd968e50b5c26642754492dea23cbd3592bde62d8 (diff)
downloadlinux-0cdee263bc5e7b20f657ea09f9272f50c568f35b.tar.xz
Merge tag 'media/v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: - v4l2 core: - sub-device framework routing improvements - NV12M tiled variants added to v4l2_format_info - some fixes at control handler freeing logic - fixed H264 SEPARATE_COLOUR_PLANE check - new staging driver: Intel IPU7 PCI - Rockchip video decoder driver got promoted from staging - iris: added HEVC/VP9 encoder/decoder support - vsp1: driver has gained Renesas VSPX support - uvc: - switched to vb2 ioctl helpers - added MSXU 1.5 metadata support - atomisp: GC0310 sensor driver cleanups in preparation for moving it out of staging - Lots of cleanup, fixes and improvements * tag 'media/v6.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (310 commits) media: rkvdec: Unstage the driver media: rkvdec: Remove TODO file media: dt-bindings: rockchip: Add RK3576 Video Decoder bindings media: dt-bindings: rockchip: Document RK3588 Video Decoder bindings media: amphion: Support dmabuf and v4l2 buffer without binding media: verisilicon: postproc: 4K support media: v4l2: Add support for NV12M tiled variants to v4l2_format_info() media: uvcvideo: Use a count variable for meta_formats instead of 0 terminating media: uvcvideo: Auto-set UVC_QUIRK_MSXU_META media: uvcvideo: Introduce V4L2_META_FMT_UVC_MSXU_1_5 media: uvcvideo: Introduce dev->meta_formats media: Documentation: Add note about UVCH length field media: uvcvideo: Do not mark valid metadata as invalid media: uvcvideo: uvc_v4l2_unlocked_ioctl: Invert PM logic media: core: export v4l2_translate_cmd media: uvcvideo: Turn on the camera if V4L2_EVENT_SUB_FL_SEND_INITIAL media: uvcvideo: Remove stream->is_streaming field media: uvcvideo: Split uvc_stop_streaming() media: uvcvideo: Handle locks in uvc_queue_return_buffers media: uvcvideo: Use vb2 ioctl and fop helpers ...
Diffstat (limited to 'Documentation/userspace-api')
-rw-r--r--Documentation/userspace-api/media/cec/cec-pin-error-inj.rst42
-rw-r--r--Documentation/userspace-api/media/v4l/biblio.rst2
-rw-r--r--Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst4
-rw-r--r--Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst11
-rw-r--r--Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst21
-rw-r--r--Documentation/userspace-api/media/v4l/meta-formats.rst1
-rw-r--r--Documentation/userspace-api/media/v4l/metafmt-uvc-msxu-1-5.rst23
-rw-r--r--Documentation/userspace-api/media/v4l/metafmt-uvc.rst4
-rw-r--r--Documentation/userspace-api/media/v4l/pixfmt-bayer.rst1
-rw-r--r--Documentation/userspace-api/media/v4l/pixfmt-rawnn-cru.rst143
-rw-r--r--Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst4
-rw-r--r--Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst2
12 files changed, 229 insertions, 29 deletions
diff --git a/Documentation/userspace-api/media/cec/cec-pin-error-inj.rst b/Documentation/userspace-api/media/cec/cec-pin-error-inj.rst
index 411d42a742f3..c02790319f3f 100644
--- a/Documentation/userspace-api/media/cec/cec-pin-error-inj.rst
+++ b/Documentation/userspace-api/media/cec/cec-pin-error-inj.rst
@@ -41,6 +41,9 @@ error injection status::
# <op> rx-clear clear all rx error injections for <op>
# <op> tx-clear clear all tx error injections for <op>
#
+ # RX error injection settings:
+ # rx-no-low-drive do not generate low-drive pulses
+ #
# RX error injection:
# <op>[,<mode>] rx-nack NACK the message instead of sending an ACK
# <op>[,<mode>] rx-low-drive <bit> force a low-drive condition at this bit position
@@ -53,6 +56,10 @@ error injection status::
# tx-custom-low-usecs <usecs> define the 'low' time for the custom pulse
# tx-custom-high-usecs <usecs> define the 'high' time for the custom pulse
# tx-custom-pulse transmit the custom pulse once the bus is idle
+ # tx-glitch-low-usecs <usecs> define the 'low' time for the glitch pulse
+ # tx-glitch-high-usecs <usecs> define the 'high' time for the glitch pulse
+ # tx-glitch-falling-edge send the glitch pulse after every falling edge
+ # tx-glitch-rising-edge send the glitch pulse after every rising edge
#
# TX error injection:
# <op>[,<mode>] tx-no-eom don't set the EOM bit
@@ -193,6 +200,14 @@ Receive Messages
This does not work if the remote CEC transmitter has logical address
0 ('TV') since that will always win.
+``rx-no-low-drive``
+ The receiver will ignore situations that would normally generate a
+ Low Drive pulse (3.6 ms). This is typically done if a spurious pulse is
+ detected when receiving a message, and it indicates to the transmitter that
+ the message has to be retransmitted since the receiver got confused.
+ Disabling this is useful to test how other CEC devices handle glitches
+ by ensuring we will not be the one that generates a Low Drive.
+
Transmit Messages
-----------------
@@ -327,3 +342,30 @@ Custom Pulses
``tx-custom-pulse``
Transmit a single custom pulse as soon as the CEC bus is idle.
+
+Glitch Pulses
+-------------
+
+This emulates what happens if the signal on the CEC line is seeing spurious
+pulses. Typically this happens after the falling or rising edge where there
+is a short voltage fluctuation that, if the CEC hardware doesn't do
+deglitching, can be seen as a spurious pulse and can cause a Low Drive
+condition or corrupt data.
+
+``tx-glitch-low-usecs <usecs>``
+ This defines the duration in microseconds that the glitch pulse pulls
+ the CEC line low. The default is 1 microsecond. The range is 0-100
+ microseconds. If 0, then no glitch pulse will be generated.
+
+``tx-glitch-high-usecs <usecs>``
+ This defines the duration in microseconds that the glitch pulse keeps the
+ CEC line high (unless another CEC adapter pulls it low in that time).
+ The default is 1 microseconds. The range is 0-100 microseconds. If 0, then
+ no glitch pulse will be generated.The total period of the glitch pulse is
+ ``tx-custom-low-usecs + tx-custom-high-usecs``.
+
+``tx-glitch-falling-edge``
+ Send the glitch pulse right after the falling edge.
+
+``tx-glitch-rising-edge``
+ Send the glitch pulse right after the rising edge.
diff --git a/Documentation/userspace-api/media/v4l/biblio.rst b/Documentation/userspace-api/media/v4l/biblio.rst
index 35674eeae20d..856acf6a890c 100644
--- a/Documentation/userspace-api/media/v4l/biblio.rst
+++ b/Documentation/userspace-api/media/v4l/biblio.rst
@@ -150,7 +150,7 @@ ITU-T.81
========
-:title: ITU-T Recommendation T.81 "Information Technology --- Digital Compression and Coding of Continous-Tone Still Images --- Requirements and Guidelines"
+:title: ITU-T Recommendation T.81 "Information Technology --- Digital Compression and Coding of Continuous-Tone Still Images --- Requirements and Guidelines"
:author: International Telecommunication Union (http://www.itu.int)
diff --git a/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst b/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst
index 42cdb0a9f786..96e0e85a822c 100644
--- a/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst
+++ b/Documentation/userspace-api/media/v4l/dev-sliced-vbi.rst
@@ -48,7 +48,7 @@ capabilities, and they may support :ref:`control` ioctls.
The :ref:`video standard <standard>` ioctls provide information vital
to program a sliced VBI device, therefore must be supported.
-.. _sliced-vbi-format-negotitation:
+.. _sliced-vbi-format-negotiation:
Sliced VBI Format Negotiation
=============================
@@ -377,7 +377,7 @@ Sliced VBI Data in MPEG Streams
If a device can produce an MPEG output stream, it may be capable of
providing
-:ref:`negotiated sliced VBI services <sliced-vbi-format-negotitation>`
+:ref:`negotiated sliced VBI services <sliced-vbi-format-negotiation>`
as data embedded in the MPEG stream. Users or applications control this
sliced VBI data insertion with the
:ref:`V4L2_CID_MPEG_STREAM_VBI_FMT <v4l2-mpeg-stream-vbi-fmt>`
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst
index b6cfc0e823d2..ccd439e9e0e3 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-rx.rst
@@ -64,17 +64,12 @@ FM_RX Control IDs
broadcasts speech. If the transmitter doesn't make this distinction,
then it will be set.
-``V4L2_CID_TUNE_DEEMPHASIS``
- (enum)
-
-enum v4l2_deemphasis -
+``V4L2_CID_TUNE_DEEMPHASIS (enum)``
Configures the de-emphasis value for reception. A de-emphasis filter
is applied to the broadcast to accentuate the high audio
frequencies. Depending on the region, a time constant of either 50
- or 75 useconds is used. The enum v4l2_deemphasis defines possible
- values for de-emphasis. Here they are:
-
-
+ or 75 microseconds is used. The enum v4l2_deemphasis defines possible
+ values for de-emphasis. They are:
.. flat-table::
:header-rows: 0
diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst
index 04c997c9a4c3..cb40cf4cc3ec 100644
--- a/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst
+++ b/Documentation/userspace-api/media/v4l/ext-ctrls-fm-tx.rst
@@ -104,7 +104,7 @@ FM_TX Control IDs
``V4L2_CID_AUDIO_LIMITER_RELEASE_TIME (integer)``
Sets the audio deviation limiter feature release time. Unit is in
- useconds. Step and range are driver-specific.
+ microseconds. Step and range are driver-specific.
``V4L2_CID_AUDIO_LIMITER_DEVIATION (integer)``
Configures audio frequency deviation level in Hz. The range and step
@@ -121,16 +121,16 @@ FM_TX Control IDs
range and step are driver-specific.
``V4L2_CID_AUDIO_COMPRESSION_THRESHOLD (integer)``
- Sets the threshold level for audio compression freature. It is a dB
+ Sets the threshold level for audio compression feature. It is a dB
value. The range and step are driver-specific.
``V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME (integer)``
- Sets the attack time for audio compression feature. It is a useconds
+ Sets the attack time for audio compression feature. It is a microseconds
value. The range and step are driver-specific.
``V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME (integer)``
Sets the release time for audio compression feature. It is a
- useconds value. The range and step are driver-specific.
+ microseconds value. The range and step are driver-specific.
``V4L2_CID_PILOT_TONE_ENABLED (boolean)``
Enables or disables the pilot tone generation feature.
@@ -143,17 +143,12 @@ FM_TX Control IDs
Configures pilot tone frequency value. Unit is in Hz. The range and
step are driver-specific.
-``V4L2_CID_TUNE_PREEMPHASIS``
- (enum)
-
-enum v4l2_preemphasis -
+``V4L2_CID_TUNE_PREEMPHASIS (enum)``
Configures the pre-emphasis value for broadcasting. A pre-emphasis
filter is applied to the broadcast to accentuate the high audio
frequencies. Depending on the region, a time constant of either 50
- or 75 useconds is used. The enum v4l2_preemphasis defines possible
- values for pre-emphasis. Here they are:
-
-
+ or 75 microseconds is used. The enum v4l2_preemphasis defines possible
+ values for pre-emphasis. They are:
.. flat-table::
:header-rows: 0
@@ -166,8 +161,6 @@ enum v4l2_preemphasis -
* - ``V4L2_PREEMPHASIS_75_uS``
- A pre-emphasis of 75 uS is used.
-
-
``V4L2_CID_TUNE_POWER_LEVEL (integer)``
Sets the output power level for signal transmission. Unit is in
dBuV. Range and step are driver-specific.
diff --git a/Documentation/userspace-api/media/v4l/meta-formats.rst b/Documentation/userspace-api/media/v4l/meta-formats.rst
index bb6876cfc271..0de80328c36b 100644
--- a/Documentation/userspace-api/media/v4l/meta-formats.rst
+++ b/Documentation/userspace-api/media/v4l/meta-formats.rst
@@ -20,6 +20,7 @@ These formats are used for the :ref:`metadata` interface only.
metafmt-pisp-fe
metafmt-rkisp1
metafmt-uvc
+ metafmt-uvc-msxu-1-5
metafmt-vivid
metafmt-vsp1-hgo
metafmt-vsp1-hgt
diff --git a/Documentation/userspace-api/media/v4l/metafmt-uvc-msxu-1-5.rst b/Documentation/userspace-api/media/v4l/metafmt-uvc-msxu-1-5.rst
new file mode 100644
index 000000000000..dd1c3076df24
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/metafmt-uvc-msxu-1-5.rst
@@ -0,0 +1,23 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _v4l2-meta-fmt-uvc-msxu-1-5:
+
+***********************************
+V4L2_META_FMT_UVC_MSXU_1_5 ('UVCM')
+***********************************
+
+Microsoft(R)'s UVC Payload Metadata.
+
+
+Description
+===========
+
+V4L2_META_FMT_UVC_MSXU_1_5 buffers follow the metadata buffer layout of
+V4L2_META_FMT_UVC with the only difference that it includes all the UVC
+metadata in the `buffer[]` field, not just the first 2-12 bytes.
+
+The metadata format follows the specification from Microsoft(R) [1].
+
+.. _1:
+
+[1] https://docs.microsoft.com/en-us/windows-hardware/drivers/stream/uvc-extensions-1-5
diff --git a/Documentation/userspace-api/media/v4l/metafmt-uvc.rst b/Documentation/userspace-api/media/v4l/metafmt-uvc.rst
index 784346d14bbd..4c05e9e54683 100644
--- a/Documentation/userspace-api/media/v4l/metafmt-uvc.rst
+++ b/Documentation/userspace-api/media/v4l/metafmt-uvc.rst
@@ -44,7 +44,9 @@ Each individual block contains the following fields:
them
* - :cspan:`1` *The rest is an exact copy of the UVC payload header:*
* - __u8 length;
- - length of the rest of the block, including this field
+ - length of the rest of the block, including this field. Please note that
+ regardless of this value, for V4L2_META_FMT_UVC the kernel will never
+ copy more than 2-12 bytes.
* - __u8 flags;
- Flags, indicating presence of other standard UVC fields
* - __u8 buf[];
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst b/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst
index ed3eb432967d..b5ca501842b0 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-bayer.rst
@@ -19,6 +19,7 @@ orders. See also `the Wikipedia article on Bayer filter
.. toctree::
:maxdepth: 1
+ pixfmt-rawnn-cru
pixfmt-srggb8
pixfmt-srggb8-pisp-comp
pixfmt-srggb10
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-rawnn-cru.rst b/Documentation/userspace-api/media/v4l/pixfmt-rawnn-cru.rst
new file mode 100644
index 000000000000..db81f1cfe0f5
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/pixfmt-rawnn-cru.rst
@@ -0,0 +1,143 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+
+.. _v4l2-pix-fmt-raw-cru10:
+.. _v4l2-pix-fmt-raw-cru12:
+.. _v4l2-pix-fmt-raw-cru14:
+.. _v4l2-pix-fmt-raw-cru20:
+
+**********************************************************************************************************************************
+V4L2_PIX_FMT_RAW_CRU10 ('CR10'), V4L2_PIX_FMT_RAW_CRU12 ('CR12'), V4L2_PIX_FMT_RAW_CRU14 ('CR14'), V4L2_PIX_FMT_RAW_CRU20 ('CR20')
+**********************************************************************************************************************************
+
+===============================================================
+Renesas RZ/V2H Camera Receiver Unit 64-bit packed pixel formats
+===============================================================
+
+| V4L2_PIX_FMT_RAW_CRU10 (CR10)
+| V4L2_PIX_FMT_RAW_CRU12 (CR12)
+| V4L2_PIX_FMT_RAW_CRU14 (CR14)
+| V4L2_PIX_FMT_RAW_CRU20 (CR20)
+
+Description
+===========
+
+These pixel formats are some of the RAW outputs for the Camera Receiver Unit in
+the Renesas RZ/V2H SoC. They are raw formats which pack pixels contiguously into
+64-bit units, with the 4 or 8 most significant bits padded.
+
+**Byte Order**
+
+.. flat-table:: RAW formats
+ :header-rows: 2
+ :stub-columns: 0
+ :widths: 36 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
+ :fill-cells:
+
+ * - :rspan:`1` Pixel Format Code
+ - :cspan:`63` Data organization
+ * - 63
+ - 62
+ - 61
+ - 60
+ - 59
+ - 58
+ - 57
+ - 56
+ - 55
+ - 54
+ - 53
+ - 52
+ - 51
+ - 50
+ - 49
+ - 48
+ - 47
+ - 46
+ - 45
+ - 44
+ - 43
+ - 42
+ - 41
+ - 40
+ - 39
+ - 38
+ - 37
+ - 36
+ - 35
+ - 34
+ - 33
+ - 32
+ - 31
+ - 30
+ - 29
+ - 28
+ - 27
+ - 26
+ - 25
+ - 24
+ - 23
+ - 22
+ - 21
+ - 20
+ - 19
+ - 18
+ - 17
+ - 16
+ - 15
+ - 14
+ - 13
+ - 12
+ - 11
+ - 10
+ - 9
+ - 8
+ - 7
+ - 6
+ - 5
+ - 4
+ - 3
+ - 2
+ - 1
+ - 0
+ * - V4L2_PIX_FMT_RAW_CRU10
+ - 0
+ - 0
+ - 0
+ - 0
+ - :cspan:`9` P5
+ - :cspan:`9` P4
+ - :cspan:`9` P3
+ - :cspan:`9` P2
+ - :cspan:`9` P1
+ - :cspan:`9` P0
+ * - V4L2_PIX_FMT_RAW_CRU12
+ - 0
+ - 0
+ - 0
+ - 0
+ - :cspan:`11` P4
+ - :cspan:`11` P3
+ - :cspan:`11` P2
+ - :cspan:`11` P1
+ - :cspan:`11` P0
+ * - V4L2_PIX_FMT_RAW_CRU14
+ - 0
+ - 0
+ - 0
+ - 0
+ - 0
+ - 0
+ - 0
+ - 0
+ - :cspan:`13` P3
+ - :cspan:`13` P2
+ - :cspan:`13` P1
+ - :cspan:`13` P0
+ * - V4L2_PIX_FMT_RAW_CRU20
+ - 0
+ - 0
+ - 0
+ - 0
+ - :cspan:`19` P2
+ - :cspan:`19` P1
+ - :cspan:`19` P0
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst
index 7c3810ff783c..8c03aedcc00e 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb12p.rst
@@ -6,7 +6,7 @@
.. _v4l2-pix-fmt-sgrbg12p:
*******************************************************************************************************************************
-V4L2_PIX_FMT_SRGGB12P ('pRCC'), V4L2_PIX_FMT_SGRBG12P ('pgCC'), V4L2_PIX_FMT_SGBRG12P ('pGCC'), V4L2_PIX_FMT_SBGGR12P ('pBCC'),
+V4L2_PIX_FMT_SRGGB12P ('pRCC'), V4L2_PIX_FMT_SGRBG12P ('pgCC'), V4L2_PIX_FMT_SGBRG12P ('pGCC'), V4L2_PIX_FMT_SBGGR12P ('pBCC')
*******************************************************************************************************************************
@@ -20,7 +20,7 @@ Description
These four pixel formats are packed raw sRGB / Bayer formats with 12
bits per colour. Every two consecutive samples are packed into three
bytes. Each of the first two bytes contain the 8 high order bits of
-the pixels, and the third byte contains the four least significants
+the pixels, and the third byte contains the four least significant
bits of each pixel, in the same order.
Each n-pixel row contains n/2 green samples and n/2 blue or red
diff --git a/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst b/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst
index 3572e42adb22..f4f53d7dbdeb 100644
--- a/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst
+++ b/Documentation/userspace-api/media/v4l/pixfmt-srggb14p.rst
@@ -24,7 +24,7 @@ These four pixel formats are packed raw sRGB / Bayer formats with 14
bits per colour. Every four consecutive samples are packed into seven
bytes. Each of the first four bytes contain the eight high order bits
of the pixels, and the three following bytes contains the six least
-significants bits of each pixel, in the same order.
+significant bits of each pixel, in the same order.
Each n-pixel row contains n/2 green samples and n/2 blue or red samples,
with alternating green-red and green-blue rows. They are conventionally