Currently there is no way for userspace to make any configuration of the VCNL4040 sensors, but only the sensor readings are exported in sysfs. To support configuration for proximity integration time value, sysfs attributes for this needs to be exported. To begin with the runtime power management turns both sensors (ALS, and PS) on before reading the sensor register values and then switches them off again. But when doing so it writes the whole register instead of just switching the power on/off bit. This needs to be fixed in order to make other persistent configurations. Kind regards Mårten Lindahl Changes in v3: - Rename defines for ALS/PS shutdown bits - Add local variable for building register value Changes in v2: - Removed unnecessary switch for chip id - Guard read/write sequence against potential race - Remove confusing boolean operation - Use bitmask macros instead of local field shifting - Use .read_avail callback instead of using IIO_CONST_ATTR - Skip [PATCH 2/3] iio: light: vcnl4000: Add enable attributes for vcnl4040 Mårten Lindahl (2): iio: light: vcnl4000: Preserve conf bits when toggle power iio: light: vcnl4000: Add ps_it attributes for vcnl4040 drivers/iio/light/vcnl4000.c | 185 +++++++++++++++++++++++++++++++++-- 1 file changed, 179 insertions(+), 6 deletions(-) -- 2.30.2
