ASoC: soc-card: export snd_soc_lookup_component_nolocked (6fbea6b6) · Commits · 戴 / test

snd_soc_lookup_component_nolocked can be used for the DPCM case that Front-End needs to get the unused platform component but added by Back-End cpu dai driver. If the component is gotten, then we can get the dma chan created by Back-End component and reused it in Front-End. Signed-off-by:

Shengjiu Wang <shengjiu.wang@nxp.com> Reviewed-by:

Nicolin Chen <nicoleotsuka@gmail.com> Link: https://lore.kernel.org/r/55f6e0d76f67a517b9a44136d790ff2a06b5caa8.1591947428.git.shengjiu.wang@nxp.com Signed-off-by:

Mark Brown <broonie@kernel.org>

include/sound/soc.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -444,6 +444,8 @@ int devm_snd_soc_register_component(struct device *dev,
		const struct snd_soc_component_driver *component_driver,
		struct snd_soc_dai_driver *dai_drv, int num_dai);
		void snd_soc_unregister_component(struct device *dev);
		struct snd_soc_component snd_soc_lookup_component_nolocked(struct device dev,
		const char *driver_name);
		struct snd_soc_component snd_soc_lookup_component(struct device dev,
		const char *driver_name);

sound/soc/soc-core.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -310,7 +310,7 @@ struct snd_soc_component snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime rtd,
		}
		EXPORT_SYMBOL_GPL(snd_soc_rtdcom_lookup);

		static struct snd_soc_component
		struct snd_soc_component
		snd_soc_lookup_component_nolocked(struct device dev, const char *driver_name)
		{
		struct snd_soc_component *component;
		@@ -329,6 +329,7 @@ static struct snd_soc_component

		return found_component;
		}
		EXPORT_SYMBOL_GPL(snd_soc_lookup_component_nolocked);

		struct snd_soc_component snd_soc_lookup_component(struct device dev,
		const char *driver_name)

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