drivers/media/platform/chips-media/wave5/wave5-helper.h

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/chips-media/wave5/wave5-helper.h

Extension

.h

Size

1484 bytes

Lines

38

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.

• 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• wave5-vpu.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef __WAVE_HELPER_H__
#define __WAVE_HELPER_H__

#include "wave5-vpu.h"

#define FMT_TYPES	2
#define MAX_FMTS	16

const char *state_to_str(enum vpu_instance_state state);
void wave5_cleanup_instance(struct vpu_instance *inst, struct file *filp);
int wave5_vpu_release_device(struct file *filp,
			     int (*close_func)(struct vpu_instance *inst, u32 *fail_res),
			     char *name);
int wave5_vpu_queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq,
			 const struct vb2_ops *ops);
int wave5_vpu_subscribe_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub);
int wave5_vpu_g_fmt_out(struct file *file, void *fh, struct v4l2_format *f);
const struct vpu_format *wave5_find_vpu_fmt(unsigned int v4l2_pix_fmt,
					    const struct vpu_format fmt_list[MAX_FMTS]);
const struct vpu_format *wave5_find_vpu_fmt_by_idx(unsigned int idx,
						   const struct vpu_format fmt_list[MAX_FMTS]);
enum wave_std wave5_to_vpu_std(unsigned int v4l2_pix_fmt, enum vpu_instance_type type);
void wave5_return_bufs(struct vb2_queue *q, u32 state);
void wave5_update_pix_fmt(struct v4l2_pix_format_mplane *pix_mp,
			  int pix_fmt_type,
			  unsigned int width,
			  unsigned int height,
			  const struct v4l2_frmsize_stepwise *frmsize);
int wave5_kfifo_alloc(struct vpu_instance *inst);
#endif

Annotation

• Immediate include surface: `wave5-vpu.h`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.