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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2017-08-31 12:56:10 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-09-23 07:29:30 -0400 |
| commit | e949f61461ab83b094cad564c89a8d2b078b4508 (patch) | |
| tree | 9bb255c603c6ccc1f23712494b535710e0245153 /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py | |
| parent | 81b79c71e546fc15e95e804de2497a448cc51a47 (diff) | |
media: s5p-cec: add NACK detection support
The s5p-cec driver returned CEC_TX_STATUS_ERROR for the NACK condition.
Some digging into the datasheet uncovered the S5P_CEC_TX_STAT1 register where
bit 0 indicates if the transmit was nacked or not.
Use this to return the correct CEC_TX_STATUS_NACK status to userspace.
This was the only driver that couldn't tell a NACK from another error, and
that was very unusual. And a potential problem for applications as well.
Tested with my Odroid-U3.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: <stable@vger.kernel.org> # for v4.12 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Util.py')
0 files changed, 0 insertions, 0 deletions