pm: Implement function stubs when PM is not enabled (32cc7bc0) · Commits · Wenxi XU / zephyr

Create stubs for when the subsystem is not compiled. Some drivers need to use constraints when are in the middle of a transaction to avoid the system to sleep. As the same driver may be used in a target that does not support power management, they have to conditionally (#if CONFIG_PM) call these functions, these stubs avoid this regular problem. Signed-off-by:

Flavio Ceolin <flavio.ceolin@intel.com>

include/pm/pm.h

+14 −2

Original line number	Diff line number	Diff line
		@@ -23,8 +23,6 @@ extern "C" {
		* @}
		*/

		#ifdef CONFIG_PM

		/**
		* @brief System Power Management API
		*
		@@ -65,6 +63,7 @@ struct pm_notifier {
		void (*state_exit)(enum pm_state state);
		};

		#ifdef CONFIG_PM
		/**
		* @brief Force usage of given power state.
		*
		@@ -202,6 +201,19 @@ void pm_power_state_exit_post_ops(struct pm_state_info info);


		void z_pm_save_idle_exit(int32_t ticks);

		#else /* CONFIG_PM */

		#define pm_notifier_register(notifier)
		#define pm_notifier_unregister(notifier) (-ENOSYS)

		#define pm_constraint_set(pm_state)
		#define pm_constraint_release(pm_state)
		#define pm_constraint_get(pm_state) (true)

		#define pm_power_state_set(info)
		#define pm_power_state_exit_post_ops(info)

		#endif /* CONFIG_PM */

		#ifdef __cplusplus

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