Declare power state constraints for a device in devicetree.
It allows a map between device instances and power states that disable
their power. This information is used by a new API
(pm_policy_device_power_lock_put/get) that automically set/release
pm state constraints.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Events in the power-management policy context are defined as any source
that will wake up the system at a known time in the future. By
registering such event, the policy manager will be able to decide wether
certain power states are worth entering or not.
Events will bypass the ticks argument received by the policy manager if
they occur earlier.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Latency is always specified in microseconds, so apend `us` to the
relevant variables. Also, make it clear that latency request structures
are private (they are just exposed publicly to allow static allocation).
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Current API allowed to get notified when the maximum system latency
changes, however, a single callback was allowed. The design was intended
for SoC specific actions when latency changes. However, in some cases
drivers may also want to know the current maximum latency to perform
local actions if other parts of the system modify it.
This patch updates the API with a pair of subscribe/unsubscribe calls to
achieve such goal. Tests have been updated to show how the API can be
used.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
In order to bring consistency in-tree, migrate all includes within
include directory to the new prefix <zephyr/...>. Note that the
conversion has been scripted, refer to zephyrproject-rtos#45388 for more
details.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Move include paths and add new target_include_directories to support
backwards compatibility:
* /include -> /include/zephyr
example: <irq.h> -> <zephyr/irq.h>
Issue #41543
Signed-off-by: Yuval Peress <peress@google.com>
