soc/amd/gpio, mb/{amd,google}: Configure pads using a single entry in GPIO configuration table

Currently, for Stoneyridge and Picasso mainboards, pads that are
configured for SCI/SMI/WAKE need to have multiple entries in the
configuration table - one for PAD_GPI and other for the special
configuration that is required. This requires a very specific ordering
of pads within the table and is prone to errors because of conflicting
params provided to the different entries for the same pad. This also
does not work very well with the concept of override GPIOs where the
entry in base table is overridden with the first matched entry from
the override table.

This change updates the way GPIO configuration is handled for special
routing like SCI/SMI/WAKE/DEBOUNCE by setting the control field of
soc_amd_gpio structure in the macros performing these
configurations. Also, program_gpios() is updated to perform a write to
GPIO control register instead of read-modify-write. This is because
mainboard is expected to provide only a single configuration entry for
each pad within a given table. Thus, there is no need to preserve
earlier configuration.

Mainboards that were providing multiple entries for a single pad are
updated accordingly.

BUG=b:159944426

Change-Id: I3364dc2982d66c4e33c2b4e6b0b97641ebea27f0
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42875
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions