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

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
...@@ -157,6 +157,21 @@ static bool fsl_ssi_volatile_reg(struct device *dev, unsigned int reg) ...@@ -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) static bool fsl_ssi_writeable_reg(struct device *dev, unsigned int reg)
{ {
switch (reg) { switch (reg) {
...@@ -179,6 +194,7 @@ static const struct regmap_config fsl_ssi_regconfig = { ...@@ -179,6 +194,7 @@ static const struct regmap_config fsl_ssi_regconfig = {
.num_reg_defaults = ARRAY_SIZE(fsl_ssi_reg_defaults), .num_reg_defaults = ARRAY_SIZE(fsl_ssi_reg_defaults),
.readable_reg = fsl_ssi_readable_reg, .readable_reg = fsl_ssi_readable_reg,
.volatile_reg = fsl_ssi_volatile_reg, .volatile_reg = fsl_ssi_volatile_reg,
.precious_reg = fsl_ssi_precious_reg,
.writeable_reg = fsl_ssi_writeable_reg, .writeable_reg = fsl_ssi_writeable_reg,
.cache_type = REGCACHE_RBTREE, .cache_type = REGCACHE_RBTREE,
}; };
......
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