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三星s3c2440 ARM9芯片在linux下的摄像头驱动

Author :SW.LEE <[e-mail]>

Hardware/Software Environment
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A) Sometimes, if you use s3c2440_ov7620.o as a moduels
"consistent_alloc" of memory allocation will be failed.
	you can try as the followings.
	1. put s3c2440_ov7620.o into zImage (using built-in)
    2. remove the unnecessary modules 

B) make sure that your board support 24Mhz Camera clock (using a internal clock)
C) make sure that S3C2440 Evalution Board is  Rev 0.17
D) make sure that you jummper setting (J12 --5 voltage )
E) make sure that your CAMERA modules C3188A  (using a internel clock , do not use extenal clock 12MHz)
                have no OSC and JP1 connected.
F) Inserting printk for debugging makes Camera application into low performance states.

How to install
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1. make sure that
  target_B'd SHELL> free 
           total    used   free   shared    buffers
    mem:   62804    42296   20508     0       8748 
   Swap:       0        0       0
  Total:   62804    42296   20508
 
 --> " Free memory " must be above the 10Mbyte at least and  
    if there were not enough for S3C2440_ov7620.o, it is recommended that you
    use built-in kernel including camera modules.

2. Supposed that 
		you must do the followings
		 A) make menuconfig
		 B) make dep
		 B) make zImage

3. open "Makefile"

4. set KERNEL_DIR= "your kernel path" 

5. type "make"
	in order to make camera D/D module

6.  in order to make camera test application
  	arm-linux-gcc  -o cam2fb cam2fb.c
 
	ex)   cam2fb  240 320 16 0 0
        ex)   cam2fb  320 240 16 0 0 
	ex)   cam2fb  176 144 16 0 0