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iio: chemical: atlas-ph-sensor: switch regmap cache 

switch from using REGCACHE_FLAT to REGCACHE_RBTREE so initial hw values
are read from device. This also allows some volatile ranges to be
dropped.

Note that REGCACHE_FLAT is intended only for very low lag cases so doesn't
do nice things like read initial values from the device.  Hence this change.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Matt Ranostay 2016-02-13 17:20:42 -08:00 committed by Jonathan Cameron
parent 3347a0656e
commit 0d43b34688
1 changed files with 1 additions and 3 deletions
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4
drivers/iio/chemical/atlas-ph-sensor.c
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@ -65,8 +65,6 @@ struct atlas_data {
static const struct regmap_range atlas_volatile_ranges[] = {
regmap_reg_range(ATLAS_REG_INT_CONTROL, ATLAS_REG_INT_CONTROL),
regmap_reg_range(ATLAS_REG_CALIB_STATUS, ATLAS_REG_CALIB_STATUS),
regmap_reg_range(ATLAS_REG_TEMP_DATA, ATLAS_REG_TEMP_DATA + 4),
regmap_reg_range(ATLAS_REG_PH_DATA, ATLAS_REG_PH_DATA + 4),
};
@ -83,7 +81,7 @@ static const struct regmap_config atlas_regmap_config = {
.volatile_table = &atlas_volatile_table,
.max_register = ATLAS_REG_PH_DATA + 4,
.cache_type = REGCACHE_FLAT,
.cache_type = REGCACHE_RBTREE,
};
static const struct iio_chan_spec atlas_channels[] = {