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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>
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@ -161,6 +161,24 @@ it is guaranteed that the state did change in between the two events.
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- Generated if the CEC pin goes from a low voltage to a high voltage.
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Only applies to adapters that have the ``CEC_CAP_MONITOR_PIN``
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capability set.
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* .. _`CEC-EVENT-PIN-HPD-LOW`:
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- ``CEC_EVENT_PIN_HPD_LOW``
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- 5
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- Generated if the HPD pin goes from a high voltage to a low voltage.
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Only applies to adapters that have the ``CEC_CAP_MONITOR_PIN``
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capability set. When open() is called, the HPD pin can be read and
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if the HPD is low, then an initial event will be generated for that
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filehandle.
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* .. _`CEC-EVENT-PIN-HPD-HIGH`:
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- ``CEC_EVENT_PIN_HPD_HIGH``
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- 6
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- Generated if the HPD pin goes from a low voltage to a high voltage.
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Only applies to adapters that have the ``CEC_CAP_MONITOR_PIN``
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capability set. When open() is called, the HPD pin can be read and
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if the HPD is high, then an initial event will be generated for that
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filehandle.
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.. tabularcolumns:: |p{6.0cm}|p{0.6cm}|p{10.9cm}|
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