1 What: /dev/gpiochip[0-9]+
2 Date: November 2015
3 KernelVersion: 4.4
4 Contact: linux-gpio@vger.kernel.org
5 Description:
6 The character device files /de
7 between GPIO chips and userspa
8
9 The ioctl(2)-based ABI is defi
10 [include/uapi]<linux/gpio.h> a
11 Documentation/userspace-api/gp
12
13 The following file operations
14
15 open(2)
16 Currently the only useful fl
17
18 ioctl(2)
19 Initiate various actions.
20
21 See Documentation/userspace-
22 for a description of all ioc
23
24 close(2)
25 Stops and free up the I/O co
26 with the file descriptor.
27
28 Users: TBD
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