Commit 41c01d65 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab

[media] cec-ioc-adap-g-caps.rst: document CEC_CAP_NEEDS_HPD

Document the new CEC_CAP_NEEDS_HPD capability.
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent f902c1e9
...@@ -113,6 +113,14 @@ returns the information to the application. The ioctl never fails. ...@@ -113,6 +113,14 @@ returns the information to the application. The ioctl never fails.
- 0x00000020 - 0x00000020
- The CEC hardware can monitor all messages, not just directed and - The CEC hardware can monitor all messages, not just directed and
broadcast messages. broadcast messages.
* .. _`CEC-CAP-NEEDS-HPD`:
- ``CEC_CAP_NEEDS_HPD``
- 0x00000040
- The CEC hardware is only active if the HDMI Hotplug Detect pin is
high. This makes it impossible to use CEC to wake up displays that
set the HPD pin low when in standby mode, but keep the CEC bus
alive.
......
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