os/linux-2.6-tag--devboard-R2_10-4/arch/cris/arch-v32/drivers/elphel/cxdma.h

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// FILE NAME  : cxsdma.h
// read/write image and FPN buffers from SDRAM

#include <asm/elphel/ext353.h>
#include <linux/poll.h>
void x313_dma_start(void);
// int x313_dma_start_raw(void);
int  x313_dma_stop(void);
void    x313_dma_reset_chain(void);

unsigned long x313_dma_init(void);
int  x313_JPEG_cmd(int cmd);
int  x313_get_JPEG_ctrl(void);

int  x313_JPEG_ctrl(int cmd);
void setJPEGHeader (int quality, int width, int height);


int cmoscam_open_dma(struct inode *inode, struct file *filp);
loff_t  x313_dma_lseek(struct file * file, loff_t offset, int orig);
ssize_t x313_dma_read(struct file * file, char * buf, size_t count, loff_t *off);
int x313_mmap_dma (struct file *filp, struct vm_area_struct *vma);
ssize_t x313_dma_write(struct file * file, const char * buf, size_t count, loff_t *off);
void x313_dma_update_jpeg_header(void); // uses channel 0 SDRAM FPGA settings - channel 0 should be pro

#define QTABLES_FPGA    0x01
#define QTABLES_EXIF    0x02
#define QTABLES_TABLE   0x04
//void           jpeg_set_quality (int quality, int writeFPGA);
void           jpeg_set_quality (int quality, int target, void *table);

// EXT functions
extern void ext_fill_jpeg_mmap_desc(struct ext_jpeg_mmap_desc_t *mdesc);
extern void ext_fill_jpeg_mmap_desc_(struct _ext_jpeg_mmap_desc_t *mdesc);

#define JPEG_HEADER_SIZE    0x26f


extern unsigned char *jpeg_header_sbuffer_ptr;

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