videobuf-dma-contig.c File Reference

#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
#include <linux/dma-mapping.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <media/videobuf-dma-contig.h>

Go to the source code of this file.

Data Structures
struct	videobuf_dma_contig_memory

Macros
#define	MAGIC_DC_MEM   0x0733ac61
#define	MAGIC_CHECK(is, should)

Functions
void	videobuf_queue_dma_contig_init (struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, enum v4l2_buf_type type, enum v4l2_field field, unsigned int msize, void *priv, struct mutex *ext_lock)
	EXPORT_SYMBOL_GPL (videobuf_queue_dma_contig_init)
void	videobuf_queue_dma_contig_init_cached (struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, enum v4l2_buf_type type, enum v4l2_field field, unsigned int msize, void *priv, struct mutex *ext_lock)
	EXPORT_SYMBOL_GPL (videobuf_queue_dma_contig_init_cached)
dma_addr_t	videobuf_to_dma_contig (struct videobuf_buffer *buf)
	EXPORT_SYMBOL_GPL (videobuf_to_dma_contig)
void	videobuf_dma_contig_free (struct videobuf_queue *q, struct videobuf_buffer *buf)
	EXPORT_SYMBOL_GPL (videobuf_dma_contig_free)
	MODULE_DESCRIPTION ("helper module to manage video4linux dma contig buffers")
	MODULE_AUTHOR ("Magnus Damm")
	MODULE_LICENSE ("GPL")

Macro Definition Documentation

#define MAGIC_CHECK	(		is,
			should
	)

Value:

if (unlikely((is) != (should))) {                   \
        pr_err("magic mismatch: %x expected %x\n", (is), (should)); \
        BUG();                              \
    }

Definition at line 35 of file videobuf-dma-contig.c.

#define MAGIC_DC_MEM   0x0733ac61

Definition at line 34 of file videobuf-dma-contig.c.

Function Documentation

EXPORT_SYMBOL_GPL

(

videobuf_queue_dma_contig_init

)

EXPORT_SYMBOL_GPL

(

videobuf_queue_dma_contig_init_cached

)

EXPORT_SYMBOL_GPL

(

videobuf_to_dma_contig

)

EXPORT_SYMBOL_GPL

(

videobuf_dma_contig_free

)

MODULE_AUTHOR

(

"Magnus Damm"

)

MODULE_DESCRIPTION

(

"helper module to manage video4linux dma contig buffers"

)

MODULE_LICENSE

(

"GPL"

)

void videobuf_dma_contig_free	(	struct videobuf_queue *	q,
		struct videobuf_buffer *	buf
	)

Definition at line 475 of file videobuf-dma-contig.c.

void videobuf_queue_dma_contig_init	(	struct videobuf_queue *	q,
		const struct videobuf_queue_ops *	ops,
		struct device *	dev,
		spinlock_t *	irqlock,
		enum v4l2_buf_type	type,
		enum v4l2_field	field,
		unsigned int	msize,
		void *	priv,
		struct mutex *	ext_lock
	)

Definition at line 435 of file videobuf-dma-contig.c.

void videobuf_queue_dma_contig_init_cached	(	struct videobuf_queue *	q,
		const struct videobuf_queue_ops *	ops,
		struct device *	dev,
		spinlock_t *	irqlock,
		enum v4l2_buf_type	type,
		enum v4l2_field	field,
		unsigned int	msize,
		void *	priv,
		struct mutex *	ext_lock
	)

Definition at line 450 of file videobuf-dma-contig.c.

dma_addr_t videobuf_to_dma_contig

(

struct videobuf_buffer *

buf

)

Definition at line 464 of file videobuf-dma-contig.c.