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ASoC: soc-core: add debugfs_prefix member to snd_soc_component_driver

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Allow the component debugfs_prefix to be set from
snd_soc_component_driver. First use case is avoiding a duplicate
debugfs entry error in case a device has multiple components
which have the same name therefore.

Note that we don't set component->debugfs_prefix if it's set already.
That's needed because partially component->debugfs_prefix is set
before calling snd_soc_component_initialize().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/d18bff6a-1df1-5f95-0cf8-10dbaa62d7be@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Heiner Kallweit 2022-03-09 21:21:55 +01:00 committed by Mark Brown
parent 0b3d5d2e35
commit d462f6ed2a
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2 changed files with 9 additions and 0 deletions
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4
include/sound/soc-component.h
View File

@ -179,6 +179,10 @@ struct snd_soc_component_driver {
struct snd_pcm_hw_params *params);
bool use_dai_pcm_id; /* use DAI link PCM ID as PCM device number */
int be_pcm_base; /* base device ID for all BE PCMs */
#ifdef CONFIG_DEBUG_FS
const char *debugfs_prefix;
#endif
};
struct snd_soc_component {

5
sound/soc/soc-core.c
View File

@ -2587,6 +2587,11 @@ int snd_soc_component_initialize(struct snd_soc_component *component,
component->dev = dev;
component->driver = driver;
#ifdef CONFIG_DEBUG_FS
if (!component->debugfs_prefix)
component->debugfs_prefix = driver->debugfs_prefix;
#endif
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_component_initialize);