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Commit b3f1c1d8 authored by Meng Wang's avatar Meng Wang
Browse files

SoC: soc-core: export function to find components 



Drivers may need to use the ASoC core function to
find out whether a particular component is already
registered with ALSA core or not.
Export the function so that drivers can use it outside
of the file.

Change-Id: I13e4a053de085974b0b53c392a9453e46f1aa66d
Signed-off-by: default avatarBanajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: default avatarMeng Wang <mengw@codeaurora.org>
parent 11b286fb

include/sound/soc.h

+5 −0
Original line number Diff line number Diff line
@@ -1336,6 +1336,11 @@ int snd_soc_register_dai(struct snd_soc_component *component, 
struct snd_soc_dai *snd_soc_find_dai(

	const struct snd_soc_dai_link_component *dlc);



#ifdef CONFIG_AUDIO_QGKI

struct snd_soc_component *soc_find_component(

	const struct snd_soc_dai_link_component *dlc);

#endif



#include <sound/soc-dai.h>



static inline

sound/soc/soc-core.c

+34 −0
Original line number Diff line number Diff line
@@ -763,6 +763,39 @@ static int snd_soc_is_matching_component( 
	return 1;

}



#ifdef CONFIG_AUDIO_QGKI

/**

 * soc_find_component: find a component from component_list in ASoC core

 *

 * @dlc: dlc of the component to query.

 *

 * function to find out if a component is already registered with ASoC core.

 *

 * Returns component handle for success, else NULL error.

 */

struct snd_soc_component *soc_find_component(

	const struct snd_soc_dai_link_component *dlc)

{

	struct snd_soc_component *component;



	lockdep_assert_held(&client_mutex);



	/*

	 * NOTE

	 *

	 * It returns *1st* found component, but some driver

	 * has few components by same of_node/name

	 * ex)

	 *	CPU component and generic DMAEngine component

	 */

	for_each_component(component)

		if (snd_soc_is_matching_component(dlc, component))

			return component;



	return NULL;

}

EXPORT_SYMBOL(soc_find_component);

#else

static struct snd_soc_component *soc_find_component(

	const struct snd_soc_dai_link_component *dlc)

{
@@ -784,6 +817,7 @@ static struct snd_soc_component *soc_find_component( 


	return NULL;

}

#endif



/**

 * snd_soc_find_dai - Find a registered DAI