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d02620a05d
For the driver functions get_range and get_data_rate, each call would end up executing an i2c transaction even if the value had not changed. Therefore, I modified the lsm6ds0 driver to cache the output data rate as well as the range. This prevents unecessary i2c transactions from occuring. BUG=chromium:476226 TEST=Flashed EC on samus and verified that the accelrange and accelrate commands still worked and that the sensors were functional. TEST=Verified Double Tap still worked. TEST=make -j buildall tests BRANCH=none Change-Id: Ie432979266dc4e4892978005de5d1df62cc0654f Signed-off-by: Aseda Aboagye <aaboagye@google.com> Reviewed-on: https://chromium-review.googlesource.com/265933 Reviewed-by: Alec Berg <alecaberg@chromium.org> Commit-Queue: Aseda Aboagye <aaboagye@chromium.org> Tested-by: Aseda Aboagye <aaboagye@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit