#ifndef __UAPI_CAM_SYNC_H__ #define __UAPI_CAM_SYNC_H__ #include <linux/videodev2.h> #include <linux/types.h> #include <linux/ioctl.h> #include <linux/media.h> #define CAM_SYNC_DEVICE_NAME "cam_sync_device" /* V4L event which user space will subscribe to */ #define CAM_SYNC_V4L_EVENT (V4L2_EVENT_PRIVATE_START + 0) /* Specific event ids to get notified in user space */ #define CAM_SYNC_V4L_EVENT_ID_CB_TRIG 0 /* Size of opaque payload sent to kernel for safekeeping until signal time */ #define CAM_SYNC_USER_PAYLOAD_SIZE 2 /* Device type for sync device needed for device discovery */ #define CAM_SYNC_DEVICE_TYPE (MEDIA_ENT_F_OLD_BASE) #define CAM_SYNC_GET_PAYLOAD_PTR(ev, type) \ (type *)((char *)ev.u.data + sizeof(struct cam_sync_ev_header)) #define CAM_SYNC_GET_HEADER_PTR(ev) \ ((struct cam_sync_ev_header *)ev.u.data) #define CAM_SYNC_STATE_INVALID 0 #define CAM_SYNC_STATE_ACTIVE 1 #define CAM_SYNC_STATE_SIGNALED_SUCCESS 2 #define CAM_SYNC_STATE_SIGNALED_ERROR 3 /** * struct cam_sync_ev_header - Event header for sync event notification * * @sync_obj: Sync object * @status: Status of the object */ struct cam_sync_ev_header { int32_t sync_obj; int32_t status; }; /** * struct cam_sync_info - Sync object creation information * * @name: Optional string representation of the sync object * @sync_obj: Sync object returned after creation in kernel */ struct cam_sync_info { char name[64]; int32_t sync_obj; }; /** * struct cam_sync_signal - Sync object signaling struct * * @sync_obj: Sync object to be signaled * @sync_state: State of the sync object to which it should be signaled */ struct cam_sync_signal { int32_t sync_obj; uint32_t sync_state; }; /** * struct cam_sync_merge - Merge information for sync objects * * @sync_objs: Pointer to sync objects * @num_objs: Number of objects in the array * @merged: Merged sync object */ struct cam_sync_merge { __u64 sync_objs; uint32_t num_objs; int32_t merged; }; /** * struct cam_sync_userpayload_info - Payload info from user space * * @sync_obj: Sync object for which payload has to be registered for * @reserved: Reserved * @payload: Pointer to user payload */ struct cam_sync_userpayload_info { int32_t sync_obj; uint32_t reserved; __u64 payload[CAM_SYNC_USER_PAYLOAD_SIZE]; }; /** * struct cam_sync_wait - Sync object wait information * * @sync_obj: Sync object to wait on * @reserved: Reserved * @timeout_ms: Timeout in milliseconds */ struct cam_sync_wait { int32_t sync_obj; uint32_t reserved; uint64_t timeout_ms; }; /** * struct cam_private_ioctl_arg - Sync driver ioctl argument * * @id: IOCTL command id * @size: Size of command payload * @result: Result of command execution * @reserved: Reserved * @ioctl_ptr: Pointer to user data */ struct cam_private_ioctl_arg { __u32 id; __u32 size; __u32 result; __u32 reserved; __u64 ioctl_ptr; }; #define CAM_PRIVATE_IOCTL_CMD \ _IOWR('V', BASE_VIDIOC_PRIVATE, struct cam_private_ioctl_arg) #define CAM_SYNC_CREATE 0 #define CAM_SYNC_DESTROY 1 #define CAM_SYNC_SIGNAL 2 #define CAM_SYNC_MERGE 3 #define CAM_SYNC_REGISTER_PAYLOAD 4 #define CAM_SYNC_DEREGISTER_PAYLOAD 5 #define CAM_SYNC_WAIT 6 #endif /* __UAPI_CAM_SYNC_H__ */