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c72628b8e7
I2C Block reads were split into two i2c_xfer() calls. However, i2c_xfer() implementation for MEC does not maintain state in between calls. This was causing block read failures because the settings for the Control Register got corrupted. Fix this by calling i2c_xfer() only once. This retrieves both string size and string. Only return the string back to the user. BUG=None TEST=Tested on Braswell Ref Design BRANCH=None Change-Id: Ife8fcb66425c6198d0dcf10f74e89c001ccac49a Signed-off-by: Shamile Khan <shamile.khan@intel.com> Signed-off-by: Divya Jyothi <divya.jyothi@intel.com> Reviewed-on: https://chromium-review.googlesource.com/260627 Reviewed-by: Randall Spangler <rspangler@chromium.org>
For an overview of the Embedded Controller firmware, refer to http://www.chromium.org/chromium-os/2014-firmware-summit