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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2017-06-07 17:46:10 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-06-20 12:52:33 +0300 |
| commit | c94cdc1e0c3589856de9d4ecafeeffdb349a8e0b (patch) | |
| tree | ca1b349082b02d9284872d81f51d21858908b657 /Documentation/media/kapi | |
| parent | 135327899d2874f2b65b3a3626b37d87df9e6a05 (diff) | |
| download | linux-c94cdc1e0c3589856de9d4ecafeeffdb349a8e0b.tar.xz | |
[media] cec: add cec_transmit_attempt_done helper function
A simpler variant of cec_transmit_done to be used where the HW does
just a single attempt at a transmit. So if the status indicates an
error, then the corresponding error count will always be 1 and this
function figures that out based on the status argument.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'Documentation/media/kapi')
| -rw-r--r-- | Documentation/media/kapi/cec-core.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/media/kapi/cec-core.rst b/Documentation/media/kapi/cec-core.rst index 278b358b2f2e..8a65c69ed071 100644 --- a/Documentation/media/kapi/cec-core.rst +++ b/Documentation/media/kapi/cec-core.rst @@ -194,6 +194,11 @@ When a transmit finished (successfully or otherwise): void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt, u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt); +or: + +.. c:function:: + void cec_transmit_attempt_done(struct cec_adapter *adap, u8 status); + The status can be one of: CEC_TX_STATUS_OK: @@ -231,6 +236,11 @@ to 1, if the hardware does support retry then either set these counters to 0 if the hardware provides no feedback of which errors occurred and how many times, or fill in the correct values as reported by the hardware. +The cec_transmit_attempt_done() function is a helper for cases where the +hardware never retries, so the transmit is always for just a single +attempt. It will call cec_transmit_done() in turn, filling in 1 for the +count argument corresponding to the status. Or all 0 if the status was OK. + When a CEC message was received: .. c:function:: |