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iio: light: veml6030: extend regmap to support caching

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The configuration registers are not volatile and are not affected
by read operations (i.e. not precious), making them suitable to be
cached in order to reduce the number of accesses to the device.

Add support for caching (RBTREE type).

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://patch.msgid.link/20250119-veml6030-scale-v2-2-6bfc4062a371@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Javier Carrasco 2025-01-19 18:31:59 +01:00 committed by Jonathan Cameron
parent 9c7eb1ab2e
commit 46e2886754
1 changed files with 31 additions and 0 deletions
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31
drivers/iio/light/veml6030.c
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@ -333,12 +333,43 @@ static const struct iio_chan_spec veml7700_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(VEML6030_SCAN_TIMESTAMP),
};
static const struct regmap_range veml6030_readable_ranges[] = {
regmap_reg_range(VEML6030_REG_ALS_CONF, VEML6030_REG_ALS_INT),
};
static const struct regmap_access_table veml6030_readable_table = {
.yes_ranges = veml6030_readable_ranges,
.n_yes_ranges = ARRAY_SIZE(veml6030_readable_ranges),
};
static const struct regmap_range veml6030_writable_ranges[] = {
regmap_reg_range(VEML6030_REG_ALS_CONF, VEML6030_REG_ALS_PSM),
};
static const struct regmap_access_table veml6030_writable_table = {
.yes_ranges = veml6030_writable_ranges,
.n_yes_ranges = ARRAY_SIZE(veml6030_writable_ranges),
};
static const struct regmap_range veml6030_volatile_ranges[] = {
regmap_reg_range(VEML6030_REG_ALS_DATA, VEML6030_REG_WH_DATA),
};
static const struct regmap_access_table veml6030_volatile_table = {
.yes_ranges = veml6030_volatile_ranges,
.n_yes_ranges = ARRAY_SIZE(veml6030_volatile_ranges),
};
static const struct regmap_config veml6030_regmap_config = {
.name = "veml6030_regmap",
.reg_bits = 8,
.val_bits = 16,
.max_register = VEML6030_REG_ALS_INT,
.val_format_endian = REGMAP_ENDIAN_LITTLE,
.rd_table = &veml6030_readable_table,
.wr_table = &veml6030_writable_table,
.volatile_table = &veml6030_volatile_table,
.cache_type = REGCACHE_RBTREE,
};
static int veml6030_get_intgrn_tm(struct iio_dev *indio_dev,