Commit Graph

6 Commits

Author SHA1 Message Date
Chandra Pratap
bf786586ca Documentation: media: fix spelling error in the HDMI CEC documentation
Correct the erroneous spelling of 'responsible' in
Documentation/admin-guide/media/cec.rst. This fixes all errors
pointed out by codespell in the file.

Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
2025-02-21 10:33:02 +01:00
Hans Verkuil
056f2821b6 media: cec: extron-da-hd-4k-plus: add the Extron DA HD 4K Plus CEC driver
Add support for the Extron DA HD 4K Plus series of 4K HDMI
Distrubution Amplifiers (aka HDMI Splitters).

These devices support CEC and this driver adds support for the
CEC protocol for both the input and all outputs (2, 4 or 6 outputs,
depending on the model).

It also exports the EDID from the outputs and allows reading and
setting the EDID of the input.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2024-09-05 20:13:41 +02:00
Hans Verkuil
8eb2a208fa media: Documentation: admin-guide: cec.rst: document NTP issue
The CEC pin framework is affected by NTP daemons speeding up or slowing
down the system clock. Document this and explain how to fix this for
chronyd.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2023-04-15 07:49:01 +01:00
Hans Verkuil
3e59c24006 media: admin-guide/media/cec.rst: update CEC debugging doc
The documentation on how to create your own Raspberry Pi CEC debugger was a
bit out of date. Update it to the Raspberry Pi 4B, drop the mention of the RTC
and a link to a picture that no longer works.

Also reorganize the text to make it easier to follow and change the pins to
match the pins I use.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2023-03-20 00:21:46 +01:00
Krzysztof Kozlowski
c360945ea4 media: docs: admin-guide: media: align HDMI CEC node names with dtschema
The bindings expect "cec" for HDMI CEC node.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2023-02-06 08:59:05 +01:00
Hans Verkuil
e9305a003f media: admin-guide: cec.rst
Document administration details about CEC devices. This was formerly
documented in a cec-status.txt I kept on my website, but this really
belongs here as an admin guide.

Updated the original cec-status.txt, and converted it to .rst.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2022-11-25 07:39:21 +00:00