1SND_JACK_SET_KEY(9)         Miscellaneous Functions        SND_JACK_SET_KEY(9)
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NAME

6       snd_jack_set_key - Set a key mapping on a jack
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SYNOPSIS

9       int snd_jack_set_key(struct snd_jack * jack, enum snd_jack_types type,
10                            int keytype);
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ARGUMENTS

13       jack
14           The jack to configure
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16       type
17           Jack report type for this key
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19       keytype
20           Input layer key type to be reported
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DESCRIPTION

23       Map a SND_JACK_BTN_* button type to an input layer key, allowing
24       reporting of keys on accessories via the jack abstraction. If no
25       mapping is provided but keys are enabled in the jack type then BTN_n
26       numeric buttons will be reported.
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28       If jacks are not reporting via the input API this call will have no
29       effect.
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31       Note that this is intended to be use by simple devices with small
32       numbers of keys that can be reported. It is also possible to access the
33       input device directly - devices with complex input capabilities on
34       accessories should consider doing this rather than using this
35       abstraction.
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37       This function may only be called prior to registration of the jack.
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RETURN

40       Zero if successful, or a negative error code on failure.
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43Kernel Hackers Manual 3.10         June 2019               SND_JACK_SET_KEY(9)
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