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authorHans Verkuil <hans.verkuil@cisco.com>2017-06-07 11:46:12 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2017-06-20 06:54:34 -0300
commitf902c1e95d5dfe5102f8467d69dc51d505f832ee (patch)
tree29e8d0abcd8b7c4d67cd69a7b46f0b4abc10bf34 /Documentation/media
parent[media] stih-cec/vivid/pulse8/rainshadow: use cec_transmit_attempt_done (diff)
downloadlinux-dev-f902c1e95d5dfe5102f8467d69dc51d505f832ee.tar.xz
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[media] cec: add CEC_CAP_NEEDS_HPD
Add a new capability CEC_CAP_NEEDS_HPD. If this capability is set then the hardware can only use CEC if the HDMI Hotplug Detect pin is high. Such hardware cannot handle the corner case in the CEC specification where it is possible to transmit messages even if no hotplug signal is present (needed for some displays that turn off the HPD when in standby, but still have CEC enabled). Typically hardware that needs this capability have the HPD wired to the CEC block, often to a 'power' or 'active' pin. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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