ASoC: fsl-sai: add default register map for regmap cache

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FSL_SAI_TDR register is writable and not readable. According to
regmap_volatile() function, if FSL_SAI_TDR want to be volatile,
it should be readable. So we should remove FSL_SAI_TDR from volatile
register list.

If the flat cache don't have default register map, when do regcache_sync
operation, the non volatile and writable registers will be synchronised
to 0. FSL_SAI_TDR reigster will be written a 0 and cause channel swap.
So add default register map for flat cache, and such register will not
be written.

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Zidan Wang 2015-10-26 15:19:03 +08:00 • committed by Mark Brown

parent 8973112aa4

commit 3f6f5b0cb3

1 changed files with 18 additions and 2 deletions

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sound/soc/fsl/fsl_sai.c

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