1 .. SPDX-License-Identifier: GPL-2.0 1 .. SPDX-License-Identifier: GPL-2.0
2 2
3 .. _GPIO_GET_CHIPINFO_IOCTL: 3 .. _GPIO_GET_CHIPINFO_IOCTL:
4 4
5 *********************** 5 ***********************
6 GPIO_GET_CHIPINFO_IOCTL 6 GPIO_GET_CHIPINFO_IOCTL
7 *********************** 7 ***********************
8 8
9 Name 9 Name
10 ==== 10 ====
11 11
12 GPIO_GET_CHIPINFO_IOCTL - Get the publicly ava 12 GPIO_GET_CHIPINFO_IOCTL - Get the publicly available information for a chip.
13 13
14 Synopsis 14 Synopsis
15 ======== 15 ========
16 16
17 .. c:macro:: GPIO_GET_CHIPINFO_IOCTL 17 .. c:macro:: GPIO_GET_CHIPINFO_IOCTL
18 18
19 ``int ioctl(int chip_fd, GPIO_GET_CHIPINFO_IOC 19 ``int ioctl(int chip_fd, GPIO_GET_CHIPINFO_IOCTL, struct gpiochip_info *info)``
20 20
21 Arguments 21 Arguments
22 ========= 22 =========
23 23
24 ``chip_fd`` 24 ``chip_fd``
25 The file descriptor of the GPIO character 25 The file descriptor of the GPIO character device returned by `open()`.
26 26
27 ``info`` 27 ``info``
28 The :c:type:`chip_info<gpiochip_info>` to 28 The :c:type:`chip_info<gpiochip_info>` to be populated.
29 29
30 Description 30 Description
31 =========== 31 ===========
32 32
33 Gets the publicly available information for a 33 Gets the publicly available information for a particular GPIO chip.
34 34
35 Return Value 35 Return Value
36 ============ 36 ============
37 37
38 On success 0 and ``info`` is populated with th 38 On success 0 and ``info`` is populated with the chip info.
39 39
40 On error -1 and the ``errno`` variable is set 40 On error -1 and the ``errno`` variable is set appropriately.
41 Common error codes are described in error-code 41 Common error codes are described in error-codes.rst.
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