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| author | Hans Verkuil <hansverk@cisco.com> | 2016-08-10 06:00:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-08-22 13:27:15 -0300 |
| commit | 277f963cea4ec87144c6713377322fe3bf172a5e (patch) | |
| tree | 9d17636b7d6e8900cdec5e94cbf03bc99253532f /Documentation | |
| parent | 31dc8b7302f1e48952ec8e90cd49dca843146cd0 (diff) | |
| download | linux-277f963cea4ec87144c6713377322fe3bf172a5e.tar.bz2 | |
[media] cec: improve dqevent documentation
The documentation for the cec_event_state_change struct was incomplete.
This patch documents what happens in the corner cases.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/media/uapi/cec/cec-ioc-dqevent.rst | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/media/uapi/cec/cec-ioc-dqevent.rst b/Documentation/media/uapi/cec/cec-ioc-dqevent.rst index 7a6d6d00ce19..2e1e73928396 100644 --- a/Documentation/media/uapi/cec/cec-ioc-dqevent.rst +++ b/Documentation/media/uapi/cec/cec-ioc-dqevent.rst @@ -64,7 +64,8 @@ it is guaranteed that the state did change in between the two events. - ``phys_addr`` - - The current physical address. + - The current physical address. This is ``CEC_PHYS_ADDR_INVALID`` if no + valid physical address is set. - .. row 2 @@ -72,7 +73,10 @@ it is guaranteed that the state did change in between the two events. - ``log_addr_mask`` - - The current set of claimed logical addresses. + - The current set of claimed logical addresses. This is 0 if no logical + addresses are claimed or if ``phys_addr`` is ``CEC_PHYS_ADDR_INVALID``. + If bit 15 is set (``1 << CEC_LOG_ADDR_UNREGISTERED``) then this device + has the unregistered logical address. In that case all other bits are 0. |