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Subject: [media] cec: improve dqevent documentation
Author: Hans Verkuil <hansv...@cisco.com>
Date: Wed Aug 10 06:00:53 2016 -0300
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.verk...@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>
Documentation/media/uapi/cec/cec-ioc-dqevent.rst | 8 ++++++--
1 file 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.
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