This adds a sensor-specific attentuation factor, which will be
applied to the ALS raw sensor readings on the EC. This is to
account for the attenutation due to glass, tinting, etc.
BUG=chrome-os-partner:34590
BRANCH=ToT,Samus
TEST=manual
In a root shell, run this:
cd /sys/bus/acpi/drivers/acpi_als/ACPI0008:00/iio:device1
while true; do cat in_illuminance_raw; sleep 1 ;done
Shine a flashlight on the ALS. Note that the readings are 5X
higher than they were before this CL.
Change-Id: I2a53872ecb5fab62e5f443d43588a26d3d7e697f
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/241191
Reviewed-by: Bryan Freed <bfreed@chromium.org>
This adds the driver and a console command to read an Intersil ISL29305
light sensor connected to the EC.
BUG=chrome-os-partner:23380
BRANCH=samus
TEST=manual
Run the "als" command from the EC console, while pointing the sensor in
various directions. It should give higher numbers when facing a light
source. If you get "Error 1", it means the ALS isn't powered.
Change-Id: I855ed64dab7fc60e29126ab3e97669be24dc6a64
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/176056
