Re: [PATCH] ASoC: sdca: Fix missing regmap dependencies in Kconfig

[Charles Keepax]

On Thu, Jan 29, 2026 at 02:14:54PM +0000, Boris Faure wrote:
> The SDCA modules failed to build with modpost errors:
> 
>   ERROR: modpost: "__devm_regmap_init_sdw" [sound/soc/sdca/snd-soc-sdca-class.ko] undefined!
>   ERROR: modpost: "__devm_regmap_init_sdw_mbq" [sound/soc/sdca/snd-soc-sdca-class-function.ko] undefined!
> 
> The issue occurs because:
> - sdca_class.c calls devm_regmap_init_sdw() which requires REGMAP_SOUNDWIRE
> - sdca_class_function.c calls devm_regmap_init_sdw_mbq_cfg() which requires REGMAP_SOUNDWIRE_MBQ
> 
> However, the Kconfig didn't select these dependencies, causing the symbols
> to be unavailable when the SDCA modules are built.
> 
> Fix this by adding:
> - select REGMAP_SOUNDWIRE to SND_SOC_SDCA_CLASS
> - select REGMAP_SOUNDWIRE_MBQ to SND_SOC_SDCA_CLASS_FUNCTION
> 
> This ensures the required regmap drivers are enabled when building SDCA support.
> 
> Configuration after fix:
>   CONFIG_SND_SOC_SDCA_CLASS=m
>   CONFIG_SND_SOC_SDCA_CLASS_FUNCTION=m
>   CONFIG_REGMAP_SOUNDWIRE=m
>   CONFIG_REGMAP_SOUNDWIRE_MBQ=m
> 
> Signed-off-by: Boris Faure <boris@xxxxxx>
> ---

Reviewed-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>

Thanks,
Charles