uapi/linux/gpio.h

1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
3  * <linux/gpio.h> - userspace ABI for the GPIO character devices
21  * Must be a multiple of 8 to ensure 32/64-bit alignment of structs.
26  * struct gpiochip_info - Information about a certain GPIO chip
27  * @name: the Linux kernel name of this GPIO chip
28  * @label: a functional name for this GPIO chip, such as a product
30  * @lines: number of GPIO lines on this chip
41  * Must be no greater than 64, as bitmaps are restricted here to 64-bits
42  * for simplicity, and a multiple of 2 to ensure 32/64-bit alignment of
54  * enum gpio_v2_line_flag - &struct gpio_v2_line_attribute.flags values
65  * @GPIO_V2_LINE_FLAG_BIAS_PULL_UP: line has pull-up bias enabled
66  * @GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN: line has pull-down bias enabled
67  * @GPIO_V2_LINE_FLAG_BIAS_DISABLED: line has bias disabled
84  * struct gpio_v2_line_values - Values of GPIO lines
97  * enum gpio_v2_line_attr_id - &struct gpio_v2_line_attribute.id values
110  * struct gpio_v2_line_attribute - a configurable attribute of a line
111  * @id: attribute identifier with value from &enum gpio_v2_line_attr_id
113  * @flags: if id is %GPIO_V2_LINE_ATTR_ID_FLAGS, the flags for the GPIO
118  * @values: if id is %GPIO_V2_LINE_ATTR_ID_OUTPUT_VALUES, a bitmap
122  * @debounce_period_us: if id is %GPIO_V2_LINE_ATTR_ID_DEBOUNCE, the
126 	__u32 id;  member
136  * struct gpio_v2_line_config_attribute - a configuration attribute
149  * struct gpio_v2_line_config - Configuration for GPIO lines
160  * first occurrence (i.e. lowest index) has precedence.
171  * struct gpio_v2_line_request - Information about a request for GPIO lines
173  * associated GPIO chip
175  * "my-bitbanged-relay"
203  * struct gpio_v2_line_info - Information about a certain GPIO line
205  * the chip, a rail or a pin header name on a board, as specified by the
206  * GPIO chip, may be empty (i.e. name[0] == '\0')
210  * @offset: the local offset on this GPIO chip, fill this in when
231  * enum gpio_v2_line_changed_type - &struct gpio_v2_line_changed.event_type
233  * @GPIO_V2_LINE_CHANGED_REQUESTED: line has been requested
234  * @GPIO_V2_LINE_CHANGED_RELEASED: line has been released
235  * @GPIO_V2_LINE_CHANGED_CONFIG: line has been reconfigured
244  * struct gpio_v2_line_info_changed - Information about a change in status
256 	/* Pad struct to 64-bit boundary and reserve space for future use. */
261  * enum gpio_v2_line_event_id - &struct gpio_v2_line_event.id values
271  * struct gpio_v2_line_event - The actual event being pushed to userspace
275  * the wall-clock time.
276  * @id: event identifier with value from &enum gpio_v2_line_event_id
286 	__u32 id;  member
312  * struct gpioline_info - Information about a certain GPIO line
317  * chip, a rail or a pin header name on a board, as specified by the gpio
318  * chip, may be empty (i.e. name[0] == '\0')
344  * struct gpioline_info_changed - Information about a change in status
352  * The &struct gpioline_info embedded here has 32-bit alignment on its own,
353  * but it works fine with 64-bit alignment too. With its 72 byte size, we can
355  * The 20-byte padding at the end makes sure we don't add any implicit padding
356  * at the end of the structure on 64-bit architectures.
379  * struct gpiohandle_request - Information about a GPIO handle request
393  * such as "my-bitbanged-relay"
413  * struct gpiohandle_config - Configuration for a GPIO handle request
432  * struct gpiohandle_data - Information of values on a GPIO handle
450  * struct gpioevent_request - Information about a GPIO event request
458  * such as "my-listener"
481  * struct gpioevent_data - The actual event being pushed to userspace
483  * @id: event identifier
490 	__u32 id;  member