Lines Matching +full:board +full:- +full:control

6    been moved to Documentation/ABI/obsolete/sysfs-gpio.
16 ----------------------
19 debugfs interface, since it provides control over GPIO direction and
27 then changing its output state, then updating the code before re-enabling
37    Do NOT abuse sysfs to control hardware that has proper kernel drivers.
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:
60 		Userspace may ask the kernel to export control of
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)
136 Board documentation should in most cases cover what GPIOs are used for
138 a daughtercard might be different depending on the base board being used,
145 --------------------------
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
166 suitable for documenting as part of a board support package.