diff options
| author |   Hans Verkuil <hans.verkuil@cisco.com> | 2017-06-07 11:46:13 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 06:55:15 -0300 |
| commit | 41c01d6582977c76f4ce827cc74e94d1892f9141 (patch) | |
| tree | 7a216d7b176e21f76cfbff8abee59b95f43ae876 /Documentation/media | |
| parent | [media] cec: add CEC_CAP_NEEDS_HPD (diff) | |
| download | linux-dev-41c01d6582977c76f4ce827cc74e94d1892f9141.tar.xz linux-dev-41c01d6582977c76f4ce827cc74e94d1892f9141.zip | |
[media] cec-ioc-adap-g-caps.rst: document CEC_CAP_NEEDS_HPD
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>
Diffstat (limited to 'Documentation/media')
| -rw-r--r-- | Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst b/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst index a0e961f11017..6d7bf7bef3eb 100644 --- a/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst +++ b/Documentation/media/uapi/cec/cec-ioc-adap-g-caps.rst @@ -113,6 +113,14 @@ returns the information to the application. The ioctl never fails. - 0x00000020 - The CEC hardware can monitor all messages, not just directed and 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. |