linux/pinctrl/pinconf-generic.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
5  * Copyright (C) 2011 ST-Ericsson SA
6  * Written on behalf of Linaro for ST-Ericsson
24  * enum pin_config_param - possible pin configuration parameters
28  *	bus to change the value by driving the bus high or low and switching to
31  *	transition from say pull-up to pull-down implies that you disable
32  *	pull-up in the process, this setting disables all biasing.
33  * @PIN_CONFIG_BIAS_HIGH_IMPEDANCE: the pin will be set to a high impedance
34  *	mode, also know as "third-state" (tristate) or "high-Z" or "floating".
37  *	to it for a while. Pins used for input are usually always high
39  * @PIN_CONFIG_BIAS_PULL_DOWN: the pin will be pulled down (usually with high
40  *	impedance to GROUND). If the argument is != 0 pull-down is enabled,
51  * @PIN_CONFIG_BIAS_PULL_UP: the pin will be pulled up (usually with high
52  *	impedance to VDD). If the argument is != 0 pull-up is enabled,
62  * @PIN_CONFIG_DRIVE_PUSH_PULL: the pin will be driven actively high and
65  *	push-pull mode, the argument is ignored.
74  * @PIN_CONFIG_INPUT_ENABLE: enable the pin's input.  Note that this does not
75  *	affect the pin's ability to drive output.  1 enables input, 0 disables
76  *	input.
77  * @PIN_CONFIG_INPUT_SCHMITT: this will configure an input pin to run in
78  *	schmitt-trigger mode. If the schmitt-trigger has adjustable hysteresis,
81  * @PIN_CONFIG_INPUT_SCHMITT_ENABLE: control schmitt-trigger mode on the pin.
82  *      If the argument != 0, schmitt-trigger mode is enabled. If it's 0,
83  *      schmitt-trigger mode is disabled.
84  * @PIN_CONFIG_INPUT_SCHMITT_UV: this will configure an input pin to run in
85  *	schmitt-trigger mode. The argument is in uV.
92  * 	value on the line. Use argument 1 to indicate high level, argument 0 to
93  *	indicate low level. (Please see Documentation/driver-api/pin-control.rst,