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Eve P1 is missing the ALS_INT_L signal and so needs to poll the Si114x. This CL adds a new config option CONFIG_ALS_SI114X_POLLING that when defined uses a deferred callback to trigger the motion sensor event that reads sensor registers. The deferred callback uses a 8 msec delay which is ~2x longer than the time required by the sensor to complete the measurement. BUG=chrome-os-partner:61470 BRANCH=none TEST=On Eve verify that light sensor measurments are present with the 'accelinfo on 1000' command. Change-Id: I212bebf2ceacbac87ccb0734cc4990dbc349b028 Signed-off-by: Scott <scollyer@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/440377 Commit-Ready: Scott Collyer <scollyer@chromium.org> Tested-by: Scott Collyer <scollyer@chromium.org> Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit For instructions on building from source, refer to http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly