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media: cec-ioc-dqevent.rst: document new CEC_EVENT_PIN_HPD_LOW/HIGH events 

Document these new CEC events.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
hifive-unleashed-5.1
Hans Verkuil 2017-08-30 12:05:55 -04:00 committed by Mauro Carvalho Chehab
parent 333ef6bd10
commit 00f7adff0c
1 changed files with 18 additions and 0 deletions
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18
Documentation/media/uapi/cec/cec-ioc-dqevent.rst
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@ -161,6 +161,24 @@ it is guaranteed that the state did change in between the two events.
- Generated if the CEC pin goes from a low voltage to a high voltage.
Only applies to adapters that have the ``CEC_CAP_MONITOR_PIN``
capability set.
* .. _`CEC-EVENT-PIN-HPD-LOW`:
- ``CEC_EVENT_PIN_HPD_LOW``
- 5
- Generated if the HPD pin goes from a high voltage to a low voltage.
Only applies to adapters that have the ``CEC_CAP_MONITOR_PIN``
capability set. When open() is called, the HPD pin can be read and
if the HPD is low, then an initial event will be generated for that
filehandle.
* .. _`CEC-EVENT-PIN-HPD-HIGH`:
- ``CEC_EVENT_PIN_HPD_HIGH``
- 6
- Generated if the HPD pin goes from a low voltage to a high voltage.
Only applies to adapters that have the ``CEC_CAP_MONITOR_PIN``
capability set. When open() is called, the HPD pin can be read and
if the HPD is high, then an initial event will be generated for that
filehandle.
.. tabularcolumns:: |p{6.0cm}|p{0.6cm}|p{10.9cm}|