GPIO_GET_CHIPINFO_IOCTL¶

Name¶

GPIO_GET_CHIPINFO_IOCTL - Get the publicly available information for a chip.

Synopsis¶

GPIO_GET_CHIPINFO_IOCTL¶

int ioctl(int chip_fd, GPIO_GET_CHIPINFO_IOCTL, struct gpiochip_info *info)

Arguments¶

chip_fd: The file descriptor of the GPIO character device returned by open().
info: The chip_info to be populated.

Description¶

Gets the publicly available information for a particular GPIO chip.

Return Value¶

On success 0 and info is populated with the chip info.

On error -1 and the errno variable is set appropriately. Common error codes are described in GPIO Error Codes.