drivers/staging/media/ipu7/ipu7-isys-queue.h

Source file repositories/reference/linux-study-clean/drivers/staging/media/ipu7/ipu7-isys-queue.h

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/ipu7/ipu7-isys-queue.h
Extension
.h
Size
1922 bytes
Lines
73
Domain
Driver Families
Bucket
drivers/staging
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct ipu7_isys_queue {
	struct vb2_queue vbq;
	struct list_head node;
	struct device *dev;
	spinlock_t lock;
	struct list_head active;
	struct list_head incoming;
	unsigned int fw_output;
};

struct ipu7_isys_buffer {
	struct list_head head;
	atomic_t str2mmio_flag;
};

struct ipu7_isys_video_buffer {
	struct vb2_v4l2_buffer vb_v4l2;
	struct ipu7_isys_buffer ib;
	dma_addr_t dma_addr;
};

#define IPU_ISYS_BUFFER_LIST_FL_INCOMING	BIT(0)
#define IPU_ISYS_BUFFER_LIST_FL_ACTIVE	BIT(1)
#define IPU_ISYS_BUFFER_LIST_FL_SET_STATE	BIT(2)

struct ipu7_isys_buffer_list {
	struct list_head head;
	unsigned int nbufs;
};

#define vb2_queue_to_isys_queue(__vb2)				\
	container_of(__vb2, struct ipu7_isys_queue, vbq)

#define ipu7_isys_to_isys_video_buffer(__ib)			\
	container_of(__ib, struct ipu7_isys_video_buffer, ib)

#define vb2_buffer_to_ipu7_isys_video_buffer(__vvb)			\
	container_of(__vvb, struct ipu7_isys_video_buffer, vb_v4l2)

#define ipu7_isys_buffer_to_vb2_buffer(__ib)				\
	(&ipu7_isys_to_isys_video_buffer(__ib)->vb_v4l2.vb2_buf)

void ipu7_isys_buffer_list_queue(struct ipu7_isys_buffer_list *bl,
				 unsigned long op_flags,
				 enum vb2_buffer_state state);
void ipu7_isys_buffer_to_fw_frame_buff(struct ipu7_insys_buffset *set,
				       struct ipu7_isys_stream *stream,
				       struct ipu7_isys_buffer_list *bl);
void ipu7_isys_queue_buf_ready(struct ipu7_isys_stream *stream,
			       struct ipu7_insys_resp *info);
int ipu7_isys_queue_init(struct ipu7_isys_queue *aq);
#endif /* IPU7_ISYS_QUEUE_H */

Annotation

Implementation Notes