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power: policy: Account exit latency

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Account exit latency time in the residency policy.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2021-04-19 17:24:27 -07:00 committed by Anas Nashif
parent e2d25bf031
commit fba5779a8d
1 changed files with 10 additions and 2 deletions
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12
subsys/power/policy/policy_residency.c
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@ -20,13 +20,21 @@ struct pm_state_info pm_policy_next_state(int32_t ticks)
int i;
for (i = ARRAY_SIZE(pm_min_residency) - 1; i >= 0; i--) {
uint32_t min_residency, exit_latency;
if (!pm_constraint_get(pm_min_residency[i].state)) {
continue;
}
min_residency = k_us_to_ticks_ceil32(
pm_min_residency[i].min_residency_us);
exit_latency = k_us_to_ticks_ceil32(
pm_min_residency[i].exit_latency_us);
__ASSERT(min_residency > exit_latency,
"min_residency_us < exit_latency_us");
if ((ticks == K_TICKS_FOREVER) ||
(ticks >= k_us_to_ticks_ceil32(
pm_min_residency[i].min_residency_us))) {
(ticks >= (min_residency - exit_latency))) {
LOG_DBG("Selected power state %d "
"(ticks: %d, min_residency: %u)",
pm_min_residency[i].state, ticks,