Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
41 lines
1.4 KiB
Plaintext
41 lines
1.4 KiB
Plaintext
What: /sys/kernel/debug/cec/*/error-inj
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Date: March 2018
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Contact: Hans Verkuil <hverkuil@kernel.org>
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Description:
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The CEC Framework allows for CEC error injection commands through
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debugfs. Drivers that support this will create an error-inj file
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through which the error injection commands can be given.
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The basic syntax is as follows:
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Leading spaces/tabs are ignored. If the next character is a '#' or the
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end of the line was reached, then the whole line is ignored. Otherwise
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a command is expected.
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It is up to the driver to decide what commands to implement. The only
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exception is that the command 'clear' without any arguments must be
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implemented and that it will remove all current error injection
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commands.
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This ensures that you can always do 'echo clear >error-inj' to clear any
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error injections without having to know the details of the driver-specific
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commands.
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Note that the output of 'error-inj' shall be valid as input to 'error-inj'.
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So this must work::
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$ cat error-inj >einj.txt
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$ cat einj.txt >error-inj
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Other than these basic rules described above this ABI is not considered
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stable and may change in the future.
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Drivers that implement this functionality must document the commands as
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part of the CEC documentation and must keep that documentation up to date
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when changes are made.
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The following CEC error injection implementations exist:
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- Documentation/userspace-api/media/cec/cec-pin-error-inj.rst
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