temporary old versions

src/drivers/elphel/circbuf-jtag.h

+// FILE NAME  : cxsdma.h
+// read/write image and FPN buffers from SDRAM
+
+#ifndef _CIRCBUF_H
+#define _CIRCBUF_H
+
+#include <linux/poll.h>
+
+int          circbuf_all_open  (struct inode *inode,  struct file *filp); // set filesize
+int          circbuf_all_release(struct inode *inode, struct file *filp);
+loff_t       circbuf_all_lseek (struct file * file,   loff_t offset, int orig);
+ssize_t      circbuf_all_write (struct file * file,   const char * buf, size_t count, loff_t *off);
+ssize_t      circbuf_all_read  (struct file * file,   char * buf, size_t count, loff_t *off);
+int          circbuf_all_mmap  (struct file *file,    struct vm_area_struct *vma);
+unsigned int circbuf_all_poll  (struct file *file,    poll_table *wait);
+//!just to notify it is not implemented
+int          circbuf_all_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
+
+
+
+int          circbuf_open  (struct inode *inode, struct file *filp); // set filesize
+loff_t       circbuf_lseek (struct file * file, loff_t offset, int orig);
+ssize_t      circbuf_write (struct file * file, const char * buf, size_t count, loff_t *off);
+ssize_t      circbuf_read  (struct file * file, char * buf, size_t count, loff_t *off);
+int          circbuf_mmap  (struct file *file, struct vm_area_struct *vma);
+unsigned int circbuf_poll  (struct file *file,    poll_table *wait);
+
+//int init_ccam_dma_buf_ptr(void);
+/*!======================================================================================
+ *! Wait queue for the processes waiting for a new frame to appear in the circular buffer
+ *!======================================================================================*/
+extern wait_queue_head_t circbuf_wait_queue;
+
+extern unsigned long  *ccam_dma_buf_ptr;
+//unsigned long *circbuf_get_ccam_ptr(void);
+
+// private data
+struct circbuf_priv_t {
+	int                 minor;
+	unsigned long       *buf_ptr;
+	dma_addr_t          phys_addr;
+};
+extern struct circbuf_priv_t *circbuf_priv_ptr;
+
+#endif /* _CIRCBUF_H */