tree bb52f81a1d35cb91af859b4308798d0d1b8d0be9
parent aa4d9b94fd1c84f9dc73a029a8eae4743cec8da4
author Keith Short <keithshort@chromium.org> 1549063590 -0700
committer Patrick Georgi <pgeorgi@google.com> 1549373269 +0000

src/soc/intel/common: Clear GPIO driver ownership when not requested

The default state of the HOSTSW_OWN register in the PCH is zero, which
configures GPIO pins for ACPI ownership.  The board variabt GPIO tables
can request specific pins to be configured for GPIO driver ownership.
This change sets the HOSTSW_OWN ownership bit when requested and
explicitly clears the ownership bit if not requested.

BUG=b:120884290
BRANCH=none
TEST=Build coreboot on sarien.  Verified UEFI to coreboot transition
boots successfully.

Change-Id: Ia82539dbbbc7cf5dfb9223902d563cafec1a73e5
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://review.coreboot.org/c/31209
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>