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Name	Size	Permission
blackfin	[ DIR ]	drwxr-xr-x
davinci	[ DIR ]	drwxr-xr-x
drv-intf	[ DIR ]	drwxr-xr-x
i2c	[ DIR ]	drwxr-xr-x
cec-notifier.h	4.18 KB	-rw-r--r--
cec-pin.h	3.08 KB	-rw-r--r--
cec.h	14.21 KB	-rw-r--r--
i2c-addr.h	1.21 KB	-rw-r--r--
imx.h	396 B	-rw-r--r--
lirc.h	29 B	-rw-r--r--
lirc_dev.h	5.03 KB	-rw-r--r--
media-device.h	15.76 KB	-rw-r--r--
media-devnode.h	5.68 KB	-rw-r--r--
media-entity.h	34.19 KB	-rw-r--r--
rc-core.h	11.57 KB	-rw-r--r--
rc-map.h	13.86 KB	-rw-r--r--
rcar-fcp.h	1.31 KB	-rw-r--r--
soc_camera.h	12.99 KB	-rw-r--r--
tuner-types.h	6.99 KB	-rw-r--r--
tuner.h	8.85 KB	-rw-r--r--
tveeprom.h	3.29 KB	-rw-r--r--
v4l2-async.h	6.55 KB	-rw-r--r--
v4l2-clk.h	2.09 KB	-rw-r--r--
v4l2-common.h	8.38 KB	-rw-r--r--
v4l2-ctrls.h	38.06 KB	-rw-r--r--
v4l2-dev.h	15.05 KB	-rw-r--r--
v4l2-device.h	11.14 KB	-rw-r--r--
v4l2-dv-timings.h	8.3 KB	-rw-r--r--
v4l2-event.h	7.56 KB	-rw-r--r--
v4l2-fh.h	4.62 KB	-rw-r--r--
v4l2-flash-led-class.h	5.59 KB	-rw-r--r--
v4l2-fwnode.h	13.35 KB	-rw-r--r--
v4l2-image-sizes.h	864 B	-rw-r--r--
v4l2-ioctl.h	31.31 KB	-rw-r--r--
v4l2-mc.h	8.02 KB	-rw-r--r--
v4l2-mediabus.h	4.96 KB	-rw-r--r--
v4l2-mem2mem.h	19.72 KB	-rw-r--r--
v4l2-rect.h	5.24 KB	-rw-r--r--
v4l2-subdev.h	37.77 KB	-rw-r--r--
v4l2-tpg-colors.h	1.89 KB	-rw-r--r--
v4l2-tpg.h	14.49 KB	-rw-r--r--
videobuf-core.h	6.99 KB	-rw-r--r--
videobuf-dma-contig.h	1.04 KB	-rw-r--r--
videobuf-dma-sg.h	2.94 KB	-rw-r--r--
videobuf-dvb.h	1.7 KB	-rw-r--r--
videobuf-vmalloc.h	1.29 KB	-rw-r--r--
videobuf2-core.h	39.7 KB	-rw-r--r--
videobuf2-dma-contig.h	866 B	-rw-r--r--
videobuf2-dma-sg.h	696 B	-rw-r--r--
videobuf2-dvb.h	1.79 KB	-rw-r--r--
videobuf2-memops.h	1.09 KB	-rw-r--r--
videobuf2-v4l2.h	9.76 KB	-rw-r--r--
videobuf2-vmalloc.h	509 B	-rw-r--r--
vsp1.h	1.84 KB	-rw-r--r--

Code Editor : videobuf-dma-sg.h

/*
 * helper functions for SG DMA video4linux capture buffers
 *
 * The functions expect the hardware being able to scatter gather
 * (i.e. the buffers are not linear in physical memory, but fragmented
 * into PAGE_SIZE chunks).  They also assume the driver does not need
 * to touch the video data.
 *
 * (c) 2007 Mauro Carvalho Chehab, <mchehab@infradead.org>
 *
 * Highly based on video-buf written originally by:
 * (c) 2001,02 Gerd Knorr <kraxel@bytesex.org>
 * (c) 2006 Mauro Carvalho Chehab, <mchehab@infradead.org>
 * (c) 2006 Ted Walther and John Sokol
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2
 */
#ifndef _VIDEOBUF_DMA_SG_H
#define _VIDEOBUF_DMA_SG_H

#include <media/videobuf-core.h>

/* --------------------------------------------------------------------- */

/*
 * A small set of helper functions to manage buffers (both userland
 * and kernel) for DMA.
 *
 * videobuf_dma_init_*()
 *	creates a buffer.  The userland version takes a userspace
 *	pointer + length.  The kernel version just wants the size and
 *	does memory allocation too using vmalloc_32().
 *
 * videobuf_dma_*()
 *	see Documentation/DMA-API-HOWTO.txt, these functions to
 *	basically the same.  The map function does also build a
 *	scatterlist for the buffer (and unmap frees it ...)
 *
 * videobuf_dma_free()
 *	no comment ...
 *
 */

struct videobuf_dmabuf {
	u32                 magic;

/* for userland buffer */
	int                 offset;
	size_t		    size;
	struct page         **pages;

/* for kernel buffers */
	void                *vaddr;
	struct page         **vaddr_pages;
	dma_addr_t          *dma_addr;
	struct device       *dev;

/* for overlay buffers (pci-pci dma) */
	dma_addr_t          bus_addr;

/* common */
	struct scatterlist  *sglist;
	int                 sglen;
	int                 nr_pages;
	int                 direction;
};

struct videobuf_dma_sg_memory {
	u32                 magic;

/* for mmap'ed buffers */
	struct videobuf_dmabuf  dma;
};

/*
 * Scatter-gather DMA buffer API.
 *
 * These functions provide a simple way to create a page list and a
 * scatter-gather list from a kernel, userspace of physical address and map the
 * memory for DMA operation.
 *
 * Despite the name, this is totally unrelated to videobuf, except that
 * videobuf-dma-sg uses the same API internally.
 */
int videobuf_dma_free(struct videobuf_dmabuf *dma);

int videobuf_dma_unmap(struct device *dev, struct videobuf_dmabuf *dma);
struct videobuf_dmabuf *videobuf_to_dma(struct videobuf_buffer *buf);

void *videobuf_sg_alloc(size_t size);

void videobuf_queue_sg_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);

#endif /* _VIDEOBUF_DMA_SG_H */

${this.title}

Code Editor : videobuf-dma-sg.h