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Commit f51e3d53 authored by Maciej S. Szmigiero's avatar Maciej S. Szmigiero Committed by Mark Brown
Browse files

ASoC: fsl_ssi: mark some registers precious 



Mark some registers precious since their
reads have side effects (like clearing flags).

Signed-off-by: default avatarMaciej S. Szmigiero <mail@maciej.szmigiero.name>
Reviewed-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 3f1c241f

sound/soc/fsl/fsl_ssi.c

+16 −0
Original line number Diff line number Diff line
@@ -157,6 +157,21 @@ static bool fsl_ssi_volatile_reg(struct device *dev, unsigned int reg) 
	}

}



static bool fsl_ssi_precious_reg(struct device *dev, unsigned int reg)

{

	switch (reg) {

	case CCSR_SSI_SRX0:

	case CCSR_SSI_SRX1:

	case CCSR_SSI_SISR:

	case CCSR_SSI_SACADD:

	case CCSR_SSI_SACDAT:

	case CCSR_SSI_SATAG:

		return true;

	default:

		return false;

	}

}



static bool fsl_ssi_writeable_reg(struct device *dev, unsigned int reg)

{

	switch (reg) {
@@ -179,6 +194,7 @@ static const struct regmap_config fsl_ssi_regconfig = { 
	.num_reg_defaults = ARRAY_SIZE(fsl_ssi_reg_defaults),

	.readable_reg = fsl_ssi_readable_reg,

	.volatile_reg = fsl_ssi_volatile_reg,

	.precious_reg = fsl_ssi_precious_reg,

	.writeable_reg = fsl_ssi_writeable_reg,

	.cache_type = REGCACHE_RBTREE,

};