arm/mach-s3c/gpio-cfg.h

1 /* SPDX-License-Identifier: GPL-2.0 */
8  * S3C Platform - GPIO pin configuration
11 /* This file contains the necessary definitions to get the basic gpio
13  * changing the pull-{up,down} configurations.
27 /* forward declaration if gpio-core.h hasn't been included */
31  * struct samsung_gpio_cfg GPIO configuration
33  * @get_pull: Read the current pull configuration for the GPIO
34  * @set_pull: Set the current pull configuration for the GPIO
35  * @set_config: Set the current configuration for the GPIO
36  * @get_config: Read the current configuration for the GPIO
38  * Each chip can have more than one type of GPIO bank available and some
41  * per-bank configuration information that other systems such as the
73  * s3c_gpio_cfgpin() - Change the GPIO function of a pin.
78  * pin, such as an gpio input, output or some form of special function
85  * If a bank of GPIOs all needs to be set to special-function 2, then
88  *	for (gpio = start; gpio < end; gpio++)
89  *		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
98  * s3c_gpio_cfgpin_range() - Change the GPIO function for configuring pin range
101  * @cfg: The configuration for the pin's function
108 				 unsigned int cfg);
110 /* Define values for the pull-{up,down} available for each gpio pin.
112  * These values control the state of the weak pull-{up,down} resistors
122  * s3c_gpio_setpull() - set the state of a gpio pin pull resistor
126  * This function sets the state of the pull-{up,down} resistor for the
134 /* configure `all` aspects of an gpio */
137  * s3c_gpio_cfgall_range() - configure range of gpio functtion and pull.
138  * @start: The gpio number to start at.
139  * @nr: The number of gpio to configure from @start.
140  * @cfg: The configuration to use
143  * Run s3c_gpio_cfgpin() and s3c_gpio_setpull() over the gpio range starting
144  * @gpio and running for @size.
151 				 unsigned int cfg, samsung_gpio_pull_t pull);
154 					   unsigned int cfg)  in s3c_gpio_cfgrange_nopull()  argument
156 	return s3c_gpio_cfgall_range(pin, size, cfg, S3C_GPIO_PULL_NONE);  in s3c_gpio_cfgrange_nopull()