drivers/media/platform/renesas/vsp1/vsp1_histo.h

Source file repositories/reference/linux-study-clean/drivers/media/platform/renesas/vsp1/vsp1_histo.h

File Facts

System
Linux kernel
Corpus path
drivers/media/platform/renesas/vsp1/vsp1_histo.h
Extension
.h
Size
1850 bytes
Lines
76
Domain
Driver Families
Bucket
drivers/media
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 vsp1_histogram_buffer {
	struct vb2_v4l2_buffer buf;
	struct list_head queue;
	void *addr;
};

struct vsp1_histogram {
	struct vsp1_entity entity;
	struct video_device video;
	struct media_pad pad;

	size_t data_size;
	u32 meta_format;

	struct mutex lock;
	struct vb2_queue queue;

	spinlock_t irqlock;
	struct list_head irqqueue;

	wait_queue_head_t wait_queue;
	bool readout;
};

static inline struct vsp1_histogram *vdev_to_histo(struct video_device *vdev)
{
	return container_of(vdev, struct vsp1_histogram, video);
}

static inline struct vsp1_histogram *subdev_to_histo(struct v4l2_subdev *subdev)
{
	return container_of(subdev, struct vsp1_histogram, entity.subdev);
}

int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo,
			enum vsp1_entity_type type, const char *name,
			const struct vsp1_entity_operations *ops,
			const unsigned int *formats, unsigned int num_formats,
			size_t data_size, u32 meta_format);
void vsp1_histogram_destroy(struct vsp1_entity *entity);

struct vsp1_histogram_buffer *
vsp1_histogram_buffer_get(struct vsp1_histogram *histo);
void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo,
				    struct vsp1_histogram_buffer *buf,
				    size_t size);

#endif /* __VSP1_HISTO_H__ */

Annotation

Implementation Notes