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_infoto 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.