Lines Matching +full:echo +full:- +full:gpios

7   Documentation/ABI/obsolete/sysfs-gpio AND NEW USERSPACE CONSUMERS
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18 configure a sysfs user interface to GPIOs. This is different from the
27 then changing its output state, then updating the code before re-enabling
37 PLEASE READ THE DOCUMENT AT Documentation/driver-api/gpio/drivers-on-gpio.rst
41 --------------
44    -	Control interfaces used to get userspace control over GPIOs;
46    -	GPIOs themselves; and
48    -	GPIO controllers ("gpio_chip" instances).
52 The control interfaces are write-only:
60 		Example:  "echo 19 > export" will create a "gpio19" node
66 		Example:  "echo 19 > unexport" will remove a "gpio19"
91 		If the pin can be configured as interrupt-generating interrupt
98 		file and read the new value or close the file and re-open it
118 controller implementing GPIOs starting at #42) and have the following
119 read-only attributes:
130 		how many GPIOs this manages (N to N + ngpio - 1)
132 Board documentation should in most cases cover what GPIOs are used for
133 what purposes. However, those numbers are not always stable; GPIOs on
141 --------------------------
142 Kernel code can explicitly manage exports of GPIOs which have already been
161 of experiments easier), or can provide an always-there interface that's