drivers/media/usb/pvrusb2/pvrusb2-context.h

Source file repositories/reference/linux-study-clean/drivers/media/usb/pvrusb2/pvrusb2-context.h

File Facts

System
Linux kernel
Corpus path
drivers/media/usb/pvrusb2/pvrusb2-context.h
Extension
.h
Size
2174 bytes
Lines
73
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 pvr2_context_stream {
	struct pvr2_channel *user;
	struct pvr2_stream *stream;
};

struct pvr2_context {
	struct pvr2_channel *mc_first;
	struct pvr2_channel *mc_last;
	struct pvr2_context *exist_next;
	struct pvr2_context *exist_prev;
	struct pvr2_context *notify_next;
	struct pvr2_context *notify_prev;
	struct pvr2_hdw *hdw;
	struct pvr2_context_stream video_stream;
	struct mutex mutex;
	int notify_flag;
	int initialized_flag;
	int disconnect_flag;

	/* Called after pvr2_context initialization is complete */
	void (*setup_func)(struct pvr2_context *);

};

struct pvr2_channel {
	struct pvr2_context *mc_head;
	struct pvr2_channel *mc_next;
	struct pvr2_channel *mc_prev;
	struct pvr2_context_stream *stream;
	struct pvr2_hdw *hdw;
	unsigned int input_mask;
	void (*check_func)(struct pvr2_channel *);
};

struct pvr2_context *pvr2_context_create(struct usb_interface *intf,
					 const struct usb_device_id *devid,
					 void (*setup_func)(struct pvr2_context *));
void pvr2_context_disconnect(struct pvr2_context *);

void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
void pvr2_channel_done(struct pvr2_channel *);
int pvr2_channel_limit_inputs(struct pvr2_channel *,unsigned int);
unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *);
int pvr2_channel_claim_stream(struct pvr2_channel *,
			      struct pvr2_context_stream *);
struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
	struct pvr2_context_stream *);

int pvr2_context_global_init(void);
void pvr2_context_global_done(void);

#endif /* __PVRUSB2_CONTEXT_H */

Annotation

Implementation Notes