1SND_CTL_ADD_SLAVE(9)           Control/Mixer API          SND_CTL_ADD_SLAVE(9)
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NAME

6       snd_ctl_add_slave - Add a virtual slave control
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SYNOPSIS

9       int snd_ctl_add_slave(struct snd_kcontrol * master,
10                             struct snd_kcontrol * slave);
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ARGUMENTS

13       master
14           vmaster element
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16       slave
17           slave element to add
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DESCRIPTION

20       Add a virtual slave control to the given master element created via
21       snd_ctl_create_virtual_master beforehand.
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23       All slaves must be the same type (returning the same information via
24       info callback). The function doesn't check it, so it's your
25       responsibility.
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27       Also, some additional limitations: at most two channels, logarithmic
28       volume control (dB level) thus no linear volume, master can only
29       attenuate the volume without gain
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RETURN

32       Zero if successful or a negative error code.
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35Kernel Hackers Manual 3.10         June 2019              SND_CTL_ADD_SLAVE(9)
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