ASoC: fsl_micfil: Set channel range control

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The range control register can't directly adjust volume gain according
to specification. It's the dynamic range of the CIC filter. The range
value should meet some conditions otherwise the channel data is not
reliable. Add an array in soc data to store const value in formula
with which range with all quality on different platforms can be
calculated. If the value set to range control exceeds the max range
there'll be warning logs.

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://patch.msgid.link/20251127022652.674574-3-chancel.liu@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Chancel Liu 2025-11-27 11:26:52 +09:00 • committed by Mark Brown

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sound/soc/fsl/fsl_micfil.c

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