snd_ctl_notify (9) - Linux Manuals

snd_ctl_notify: Send notification to user-space for a control change

Command to display snd_ctl_notify manual in Linux: $ man 9 snd_ctl_notify

NAME

snd_ctl_notify - Send notification to user-space for a control change

SYNOPSIS

void snd_ctl_notify(struct snd_card * card, unsigned int mask, struct snd_ctl_elem_id * id);

ARGUMENTS

card

: the card to send notification

mask

: the event mask, SNDRV_CTL_EVENT_*

: the ctl element id to send notification

DESCRIPTION

This function adds an event record with the given id and mask, appends to the list and wakes up the user-space for notification. This can be called in the atomic context.