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Commit f1cba4d4 authored by Vidyakumar Athota's avatar Vidyakumar Athota Committed by Gerrit - the friendly Code Review server
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dsp: add audio event notifier support 



Add support for audio event notifier framework to
send/receive events across audio drivers.

CRs-Fixed: 2244131
Change-Id: I1e36703a91625cd52333596d66dc21a0e8876738
Signed-off-by: default avatarVidyakumar Athota <vathota@codeaurora.org>
Signed-off-by: default avatarVignesh Kulothungan <vigneshk@codeaurora.org>
parent 45e64b92

dsp/Kbuild

+1 −0
Original line number Diff line number Diff line
@@ -75,6 +75,7 @@ COMMON_INC := -I$(AUDIO_ROOT)/$(COMMON_DIR) 
############ QDSP6V2 ############



ifdef CONFIG_SND_SOC_MSM_QDSP6V2_INTF

	Q6_OBJS += msm-audio-event-notify.o

	Q6_OBJS += audio_calibration.o

	Q6_OBJS += audio_cal_utils.o

	Q6_OBJS += q6adm.o

dsp/msm-audio-event-notify.c

0 → 100644
+45 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#include <dsp/msm-audio-event-notify.h>

#include <linux/export.h>



static ATOMIC_NOTIFIER_HEAD(msm_aud_evt_notifier_list);



/**

 *	msm_aud_evt_register_client - register a client notifier

 *	@nb: notifier block to callback on events

 */

int msm_aud_evt_register_client(struct notifier_block *nb)

{

	return atomic_notifier_chain_register(&msm_aud_evt_notifier_list, nb);

}

EXPORT_SYMBOL(msm_aud_evt_register_client);



/**

 *	msm_aud_evt_unregister_client - unregister a client notifier

 *	@nb: notifier block to callback on events

 */

int msm_aud_evt_unregister_client(struct notifier_block *nb)

{

	return atomic_notifier_chain_unregister(&msm_aud_evt_notifier_list, nb);

}

EXPORT_SYMBOL(msm_aud_evt_unregister_client);



/**

 * msm_aud_evt_notifier_call_chain - notify clients of fb_events

 *

 */

int msm_aud_evt_notifier_call_chain(unsigned long val, void *v)

{

	return atomic_notifier_call_chain(&msm_aud_evt_notifier_list, val, v);

}

EXPORT_SYMBOL_GPL(msm_aud_evt_notifier_call_chain);

include/dsp/msm-audio-event-notify.h

0 → 100644
+44 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2018, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 */



#ifndef __MSM_AUDIO_EVENT_NOTIFY_H_

#define __MSM_AUDIO_EVENT_NOTIFY_H_



#include <linux/notifier.h>



#if IS_ENABLED(CONFIG_SND_SOC_MSM_QDSP6V2_INTF)

int msm_aud_evt_register_client(struct notifier_block *nb);

int msm_aud_evt_unregister_client(struct notifier_block *nb);

int msm_aud_evt_notifier_call_chain(unsigned long val, void *v);

#else

static inline int msm_aud_evt_register_client(struct notifier_block *nb)

{

	return -ENOSYS;

}



static inline int msm_aud_evt_unregister_client(struct notifier_block *nb)

{

	return -ENOSYS;

}



static inline int msm_aud_evt_notifier_call_chain(unsigned long val, void *v)

{

	return -ENOSYS;

}

#endif



enum {

	MSM_AUD_DC_EVENT = 1,

};



#endif