drivers/staging/media/atomisp/pci/ia_css_metadata.h

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/ia_css_metadata.h

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/ia_css_metadata.h
Extension
.h
Size
2051 bytes
Lines
69
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 ia_css_metadata_config {
	enum atomisp_input_format data_type; /** Data type of CSI-2 embedded
			data. The default value is ATOMISP_INPUT_FORMAT_EMBEDDED. For
			certain sensors, user can choose non-default data type for embedded
			data. */
	struct ia_css_resolution  resolution; /** Resolution */
};

struct ia_css_metadata_info {
	struct ia_css_resolution resolution; /** Resolution */
	u32                 stride;     /** Stride in bytes */
	u32                 size;       /** Total size in bytes */
};

struct ia_css_metadata {
	struct ia_css_metadata_info info;    /** Layout info */
	ia_css_ptr		    address; /** CSS virtual address */
	u32		    exp_id;
	/** Exposure ID, see ia_css_event_public.h for more detail */
};

#define SIZE_OF_IA_CSS_METADATA_STRUCT sizeof(struct ia_css_metadata)

static_assert(sizeof(struct ia_css_metadata) == SIZE_OF_IA_CSS_METADATA_STRUCT);

/* @brief Allocate a metadata buffer.
 * @param[in]   metadata_info Metadata info struct, contains details on metadata buffers.
 * @return      Pointer of metadata buffer or NULL (if error)
 *
 * This function allocates a metadata buffer according to the properties
 * specified in the metadata_info struct.
 */
struct ia_css_metadata *
ia_css_metadata_allocate(const struct ia_css_metadata_info *metadata_info);

/* @brief Free a metadata buffer.
 *
 * @param[in]	metadata	Pointer of metadata buffer.
 * @return	None
 *
 * This function frees a metadata buffer.
 */
void
ia_css_metadata_free(struct ia_css_metadata *metadata);

#endif /* __IA_CSS_METADATA_H */

Annotation

Implementation Notes