ACPI: PM: s2idle: Add _Ixx GPE wake indicator support

ACPI 6.6 defines _Ixx indicator objects under \_GPE to mark GPEs that
should remain wake-enabled in s2idle without a _PRW association.

To support them, add new function acpi_setup_ixx_gpes() that looks for
_Ixx objects for all GPEs in the FADT 0/1 blocks and if it finds any, it
marks the corresponding GPE as wake-capable, in which case the GPE is
also enabled so long as it has a handler method because marking it as
wake-capable causes acpi_update_all_gpes() to skip it.

Since the above only needs to be done if suspend-to-idle is enabled,
make acpi_s2idle_setup() call that new function.

For now, this is limited to x86 systems and it assumes that the GPEs
with _Ixx will not cause spurious wakeups to occur while the system
is suspended.

Signed-off-by: Saranya Gopal <saranya.gopal@intel.com>
[ rjw: Added three empty code lines, subject tweak, changelog edits ]
[ rjw: New debug message adjustment ]
Link: https://patch.msgid.link/20260904073844.2740931-1-saranya.gopal@intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

0 files changed, 0 insertions, 0 deletions