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: / usr / src / linux-headers-6.8.0-101 / include / linux / pinctrl /
Filename : pinctrl-state.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Standard pin control state definitions
 */

#ifndef __LINUX_PINCTRL_PINCTRL_STATE_H
#define __LINUX_PINCTRL_PINCTRL_STATE_H

/**
 * @PINCTRL_STATE_DEFAULT: the state the pinctrl handle shall be put
 *	into as default, usually this means the pins are up and ready to
 *	be used by the device driver. This state is commonly used by
 *	hogs to configure muxing and pins at boot, and also as a state
 *	to go into when returning from sleep and idle in
 *	.pm_runtime_resume() or ordinary .resume() for example.
 * @PINCTRL_STATE_INIT: normally the pinctrl will be set to "default"
 *	before the driver's probe() function is called.  There are some
 *	drivers where that is not appropriate becausing doing so would
 *	glitch the pins.  In those cases you can add an "init" pinctrl
 *	which is the state of the pins before drive probe.  After probe
 *	if the pins are still in "init" state they'll be moved to
 *	"default".
 * @PINCTRL_STATE_IDLE: the state the pinctrl handle shall be put into
 *	when the pins are idle. This is a state where the system is relaxed
 *	but not fully sleeping - some power may be on but clocks gated for
 *	example. Could typically be set from a pm_runtime_suspend() or
 *	pm_runtime_idle() operation.
 * @PINCTRL_STATE_SLEEP: the state the pinctrl handle shall be put into
 *	when the pins are sleeping. This is a state where the system is in
 *	its lowest sleep state. Could typically be set from an
 *	ordinary .suspend() function.
 */
#define PINCTRL_STATE_DEFAULT "default"
#define PINCTRL_STATE_INIT "init"
#define PINCTRL_STATE_IDLE "idle"
#define PINCTRL_STATE_SLEEP "sleep"

#endif /* __LINUX_PINCTRL_PINCTRL_STATE_H */