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power: Implement support for exit-latency-us

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Add exit-latency-us in pm_state_info and extract this
information from the device tree.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
This commit is contained in:
Flavio Ceolin 2021-04-01 22:22:42 -07:00 • committed by Anas Nashif
commit 41faae4b07
1 changed files with 21 additions and 6 deletions
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27
include/power/power_state.h
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@ -120,13 +120,15 @@ struct pm_state_info {
* compatible = "zephyr,power-state";
* power-state-name = "suspend-to-idle";
* substate-id = <1>;
* min-residency-us = <1>;
* min-residency-us = <10000>;
* exit-latency-us = <100>;
* };
* state1: state1 {
* compatible = "zephyr,power-state";
* power-state-name = "suspend-to-idle";
* substate-id = <2>;
* min-residency-us = <1>;
* min-residency-us = <20000>;
* exit-latency-us = <200>;
* };
* }
*/
@ -139,6 +141,13 @@ struct pm_state_info {
* @note 0 means that this property is not available for this state.
*/
uint32_t min_residency_us;
/**
* Worst case latency in microseconds required to exit the idle state.
*
* @note 0 means that this property is not available for this state.
*/
uint32_t exit_latency_us;
};
/**
@ -156,6 +165,8 @@ struct pm_state_info {
cpu_power_states, i, substate_id, 0), \
.min_residency_us = DT_PROP_BY_PHANDLE_IDX_OR(node_id, \
cpu_power_states, i, min_residency_us, 0),\
.exit_latency_us = DT_PROP_BY_PHANDLE_IDX_OR(node_id, \
cpu_power_states, i, exit_latency_us, 0),\
},
/**
@ -197,13 +208,15 @@ struct pm_state_info {
* state0: state0 {
* compatible = "zephyr,power-state";
* power-state-name = "suspend-to-idle";
* min-residency-us = <1>;
* min-residency-us = <10000>;
* exit-latency-us = <100>;
* };
*
* state1: state1 {
* compatible = "zephyr,power-state";
* power-state-name = "suspend-to-ram";
* min-residency-us = <5>;
* min-residency-us = <50000>;
* exit-latency-us = <500>;
* };
* };
*
@ -262,13 +275,15 @@ struct pm_state_info {
* state0: state0 {
* compatible = "zephyr,power-state";
* power-state-name = "suspend-to-idle";
* min-residency-us = <1>;
* min-residency-us = <10000>;
* exit-latency-us = <100>;
* };
*
* state1: state1 {
* compatible = "zephyr,power-state";
* power-state-name = "suspend-to-ram";
* min-residency-us = <5>;
* min-residency-us = <50000>;
* exit-latency-us = <500>;
* };
*
* Example usage: *