Nearly all of the registers in tps65090 combine control bits and
status bits. Turn off caching of registers so that we can read status
bits reliably.
NOTE: the IRQnMASK and CG_CTRLn registers are the exception and could
be cached. If we find that we spend a lot of time reading those we
can turn on cache for just those registers.
Signed-off-by: Doug Anderson <dianders@xxxxxxxxxxxx>
---
drivers/mfd/tps65090.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/mfd/tps65090.c b/drivers/mfd/tps65090.c
index c3cddb4..4cfdd07 100644
--- a/drivers/mfd/tps65090.c
+++ b/drivers/mfd/tps65090.c
@@ -149,21 +149,11 @@ static struct regmap_irq_chip tps65090_irq_chip = {
.mask_invert = true,
};
-static bool is_volatile_reg(struct device *dev, unsigned int reg)
-{
- if ((reg == TPS65090_INT_STS) || (reg == TPS65090_INT_STS2))
- return true;
- else
- return false;
-}
-
static const struct regmap_config tps65090_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = TOTAL_NUM_REG,
.num_reg_defaults_raw = TOTAL_NUM_REG,
- .cache_type = REGCACHE_RBTREE,
- .volatile_reg = is_volatile_reg,
};
#ifdef CONFIG_OF
--
1.9.1.423.g4596e3a
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