f1cba4d4b2
Add support for audio event notifier framework to send/receive events across audio drivers. CRs-Fixed: 2244131 Change-Id: I1e36703a91625cd52333596d66dc21a0e8876738 Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org> Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>
46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <dsp/msm-audio-event-notify.h>
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#include <linux/export.h>
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static ATOMIC_NOTIFIER_HEAD(msm_aud_evt_notifier_list);
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/**
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* msm_aud_evt_register_client - register a client notifier
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* @nb: notifier block to callback on events
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*/
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int msm_aud_evt_register_client(struct notifier_block *nb)
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{
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return atomic_notifier_chain_register(&msm_aud_evt_notifier_list, nb);
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}
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EXPORT_SYMBOL(msm_aud_evt_register_client);
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/**
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* msm_aud_evt_unregister_client - unregister a client notifier
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* @nb: notifier block to callback on events
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*/
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int msm_aud_evt_unregister_client(struct notifier_block *nb)
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{
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return atomic_notifier_chain_unregister(&msm_aud_evt_notifier_list, nb);
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}
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EXPORT_SYMBOL(msm_aud_evt_unregister_client);
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/**
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* msm_aud_evt_notifier_call_chain - notify clients of fb_events
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*
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*/
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int msm_aud_evt_notifier_call_chain(unsigned long val, void *v)
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{
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return atomic_notifier_call_chain(&msm_aud_evt_notifier_list, val, v);
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}
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EXPORT_SYMBOL_GPL(msm_aud_evt_notifier_call_chain);
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