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acpi: Reduce wait interval in delay loop for sleep 

The optimization of sleep time in acpi code includes reducing the sleep
duration and increasing the polling frequency within the acpi _ON/_OFF
method. StorageD3Enable is activated in Google/Rex, and this
optimization results in a saving of approximately 25ms in D3cold resume
time, reducing it from around 160ms to 135ms.

BUG=b:296206467
BRANCH=firmware-rex-15709.B

TEST=boot test verified on google/rex
     verified _ON/_OFF Method in SSDT.
     verifid kernel log in s0ix test -
          0000:00:06.0: PM: pci_pm_resume_noirq

Change-Id: I7ba960cb78b42ff0108a48f00206b6df0c78ce7a
Signed-off-by: Sukumar Ghorai <sukumar.ghorai@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79414
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jakub Czapiga <czapiga@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Jérémy Compostella <jeremy.compostella@intel.com>
This commit is contained in:
Sukumar Ghorai 2023-12-07 18:33:43 -08:00 committed by Subrata Banik
parent 20629b4e65
commit 9b3c5afc00
1 changed files with 4 additions and 4 deletions
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8
src/acpi/acpigen.c
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@ -2459,10 +2459,10 @@ void acpigen_write_delay_until_namestr_int(uint32_t wait_ms, const char *name, u
uint32_t wait_ms_segment = 1;
uint32_t segments = wait_ms;
/* Sleep in 16ms segments if delay is more than 32ms. */
if (wait_ms > 32) {
wait_ms_segment = 16;
segments = wait_ms / 16;
/* Sleep in 2ms segments if delay is more than 2ms. */
if (wait_ms > 2) {
wait_ms_segment = 2;
segments = wait_ms / wait_ms_segment;
}
acpigen_write_store_int_to_op(segments, LOCAL7_OP);