tree 6569cdf74de31ce07687dadec8475ee0e6b2dfe6
parent 2e79009503bcb0bc324ca60f9d4a9121dcdcbf84
author Duncan Laurie <dlaurie@chromium.org> 1474330930 -0700
committer Patrick Georgi <pgeorgi@google.com> 1474447611 +0200

drivers/i2c/tpm/cr50: Support interrupts for status

Support reading the ACPI GPE status (on x86) to determine when
the cr50 is ready to return response data or is done processing
written data.  If the interrupt is not defined by Kconfig then
it will continue to use the safe delay.

This was tested with reef hardware and a modified cr50 image
that generates interrupts at the intended points.

BUG=chrome-os-partner:53336

Change-Id: Ic8f805159650c45382cacac8840450a1f8b4d7a1
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://review.coreboot.org/16672
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>