device.h File Reference

#include <zephyr/device.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/atomic.h>
#include <zephyr/sys/iterable_sections.h>

Go to the source code of this file.

Data Structures
struct	pm_device_base
	Device PM info. More...
struct	pm_device
	Runtime PM info for device with generic PM. More...
struct	pm_device_isr
	Runtime PM info for device with synchronous PM. More...

Macros
#define	PM_DEVICE_ISR_SAFE   1
	Flag indicating that runtime PM API for the device can be called from any context.
#define	PM_DEVICE_DEFINE(dev_id, pm_action_cb, ...)
	Define device PM resources for the given device name.
#define	PM_DEVICE_DT_DEFINE(node_id, pm_action_cb, ...)
	Define device PM resources for the given node identifier.
#define	PM_DEVICE_DT_INST_DEFINE(idx, pm_action_cb, ...)
	Define device PM resources for the given instance.
#define	PM_DEVICE_GET(dev_id)    Z_PM_DEVICE_GET(dev_id)
	Obtain a reference to the device PM resources for the given device.
#define	PM_DEVICE_DT_GET(node_id)    PM_DEVICE_GET(Z_DEVICE_DT_DEV_ID(node_id))
	Obtain a reference to the device PM resources for the given node.
#define	PM_DEVICE_DT_INST_GET(idx)    PM_DEVICE_DT_GET(DT_DRV_INST(idx))
	Obtain a reference to the device PM resources for the given instance.

Typedefs
typedef int(*	pm_device_action_cb_t) (const struct device *dev, enum pm_device_action action)
	Device PM action callback.
typedef bool(*	pm_device_action_failed_cb_t) (const struct device *dev, int err)
	Device PM action failed callback.

Enumerations
enum	pm_device_state { PM_DEVICE_STATE_ACTIVE , PM_DEVICE_STATE_SUSPENDED , PM_DEVICE_STATE_SUSPENDING , PM_DEVICE_STATE_OFF }
	Device power states. More...
enum	pm_device_action { PM_DEVICE_ACTION_SUSPEND , PM_DEVICE_ACTION_RESUME , PM_DEVICE_ACTION_TURN_OFF , PM_DEVICE_ACTION_TURN_ON }
	Device PM actions. More...

Functions
const char *	pm_device_state_str (enum pm_device_state state)
	Get name of device PM state.
int	pm_device_action_run (const struct device *dev, enum pm_device_action action)
	Run a pm action on a device.
void	pm_device_children_action_run (const struct device *dev, enum pm_device_action action, pm_device_action_failed_cb_t failure_cb)
	Run a pm action on all children of a device.
int	pm_device_state_get (const struct device *dev, enum pm_device_state *state)
	Obtain the power state of a device.
static void	pm_device_init_suspended (const struct device *dev)
	Initialize a device state to PM_DEVICE_STATE_SUSPENDED.
static void	pm_device_init_off (const struct device *dev)
	Initialize a device state to PM_DEVICE_STATE_OFF.
void	pm_device_busy_set (const struct device *dev)
	Mark a device as busy.
void	pm_device_busy_clear (const struct device *dev)
	Clear a device busy status.
bool	pm_device_is_any_busy (void)
	Check if any device is busy.
bool	pm_device_is_busy (const struct device *dev)
	Check if a device is busy.
bool	pm_device_wakeup_enable (const struct device *dev, bool enable)
	Enable or disable a device as a wake up source.
bool	pm_device_wakeup_is_enabled (const struct device *dev)
	Check if a device is enabled as a wake up source.
bool	pm_device_wakeup_is_capable (const struct device *dev)
	Check if a device is wake up capable.
bool	pm_device_on_power_domain (const struct device *dev)
	Check if the device is on a switchable power domain.
int	pm_device_power_domain_add (const struct device *dev, const struct device *domain)
	Add a device to a power domain.
int	pm_device_power_domain_remove (const struct device *dev, const struct device *domain)
	Remove a device from a power domain.
bool	pm_device_is_powered (const struct device *dev)
	Check if the device is currently powered.
int	pm_device_driver_init (const struct device *dev, pm_device_action_cb_t action_cb)
	Setup a device driver into the lowest valid power mode.