Lines Matching +full:interface +full:- +full:node
1 GPIO Sysfs Interface for Userspace
6 been moved to Documentation/ABI/obsolete/sysfs-gpio.
12 This interface will continue to be maintained for the migration period,
16 ----------------------
18 configure a sysfs user interface to GPIOs. This is different from the
19 debugfs interface, since it provides control over GPIO direction and
27 then changing its output state, then updating the code before re-enabling
38 Please read Documentation/driver-api/gpio/drivers-on-gpio.rst
44 --------------
47 - Control interfaces used to get userspace control over GPIOs;
49 - GPIOs themselves; and
51 - GPIO controllers ("gpio_chip" instances).
55 The control interfaces are write-only:
63 Example: "echo 19 > export" will create a "gpio19" node
70 node exported using the "export" file.
94 If the pin can be configured as interrupt-generating interrupt
103 re-open it to read the value.
123 read-only attributes:
134 how many GPIOs this manages (N to N + ngpio - 1)
145 --------------------------
155 /* create a sysfs link to an exported GPIO node */
160 the sysfs interface by gpiod_export(). The driver can control whether the
165 of experiments easier), or can provide an always-there interface that's
169 symlinks from elsewhere in sysfs to the GPIO sysfs node. Drivers can
170 use this to provide the interface under their own device in sysfs with