diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/gpio.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/uapi/linux/gpio.h b/include/uapi/linux/gpio.h index 3f93e1bcd3dd..416ce47f2291 100644 --- a/include/uapi/linux/gpio.h +++ b/include/uapi/linux/gpio.h @@ -25,6 +25,32 @@ struct gpiochip_info { __u32 lines; }; +/* Line is in use by the kernel */ +#define GPIOLINE_FLAG_KERNEL (1UL << 0) +#define GPIOLINE_FLAG_IS_OUT (1UL << 1) +#define GPIOLINE_FLAG_ACTIVE_LOW (1UL << 2) +#define GPIOLINE_FLAG_OPEN_DRAIN (1UL << 3) +#define GPIOLINE_FLAG_OPEN_SOURCE (1UL << 4) + +/** + * struct gpioline_info - Information about a certain GPIO line + * @line_offset: the local offset on this GPIO device, fill in when + * requesting information from the kernel + * @flags: various flags for this line + * @name: the name of this GPIO line + * @label: a functional name for this GPIO line + * @kernel: this GPIO is in use by the kernel + * @out: this GPIO is an output line (false means it is an input) + * @active_low: this GPIO is active low + */ +struct gpioline_info { + __u32 line_offset; + __u32 flags; + char name[32]; + char label[32]; +}; + #define GPIO_GET_CHIPINFO_IOCTL _IOR('o', 0x01, struct gpiochip_info) +#define GPIO_GET_LINEINFO_IOCTL _IOWR('o', 0x02, struct gpioline_info) #endif /* _UAPI_GPIO_H_ */ |