drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_dbgfs.h

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_dbgfs.h

Extension

.h

Size

1934 bytes

Lines

75

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

• No C-style include directives detected by the generator.

Detected Declarations

• struct mtk_vcodec_dec_dev
• struct mtk_vcodec_dec_ctx
• struct mtk_vcodec_dbgfs_inst
• struct mtk_vcodec_dbgfs
• enum mtk_vdec_dbgfs_log_index
• function mtk_vcodec_dbgfs_create

Annotated Snippet

struct mtk_vcodec_dbgfs_inst {
	struct list_head node;
	struct mtk_vcodec_dec_ctx *vcodec_ctx;
	int inst_id;
};

/**
 * struct mtk_vcodec_dbgfs  - dbgfs information
 * @dbgfs_head:  list head used to link each instance
 * @vcodec_root: vcodec dbgfs entry
 * @dbgfs_lock:  dbgfs lock used to protect dbgfs_buf
 * @dbgfs_buf:   dbgfs buf used to store dbgfs cmd
 * @buf_size:    buffer size of dbgfs
 * @inst_count:  the count of total instance
 */
struct mtk_vcodec_dbgfs {
	struct list_head dbgfs_head;
	struct dentry *vcodec_root;
	struct mutex dbgfs_lock;
	char dbgfs_buf[1024];
	int buf_size;
	int inst_count;
};

#if defined(CONFIG_DEBUG_FS)
void mtk_vcodec_dbgfs_create(struct mtk_vcodec_dec_ctx *ctx);
void mtk_vcodec_dbgfs_remove(struct mtk_vcodec_dec_dev *vcodec_dev, int ctx_id);
void mtk_vcodec_dbgfs_init(void *vcodec_dev, bool is_encode);
void mtk_vcodec_dbgfs_deinit(struct mtk_vcodec_dbgfs *dbgfs);
#else
static inline void mtk_vcodec_dbgfs_create(struct mtk_vcodec_dec_ctx *ctx)
{
}

static inline void mtk_vcodec_dbgfs_remove(struct mtk_vcodec_dec_dev *vcodec_dev, int ctx_id)
{
}

static inline void mtk_vcodec_dbgfs_init(void *vcodec_dev, bool is_encode)
{
}

static inline void mtk_vcodec_dbgfs_deinit(struct mtk_vcodec_dbgfs *dbgfs)
{
}
#endif
#endif

Annotation

• Detected declarations: `struct mtk_vcodec_dec_dev`, `struct mtk_vcodec_dec_ctx`, `struct mtk_vcodec_dbgfs_inst`, `struct mtk_vcodec_dbgfs`, `enum mtk_vdec_dbgfs_log_index`, `function mtk_vcodec_dbgfs_create`.
• 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.