From 46e28867540434f94ddb745c74466f40669bcc48 Mon Sep 17 00:00:00 2001 From: Javier Carrasco Date: Sun, 19 Jan 2025 18:31:59 +0100 Subject: [PATCH] iio: light: veml6030: extend regmap to support caching 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 Link: https://patch.msgid.link/20250119-veml6030-scale-v2-2-6bfc4062a371@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/light/veml6030.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/iio/light/veml6030.c b/drivers/iio/light/veml6030.c index 8e4eb8b0c1927..3afd4bb1ad531 100644 --- a/drivers/iio/light/veml6030.c +++ b/drivers/iio/light/veml6030.c @@ -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, -- 2.47.3