How to get image use csi parallel port?

hanseunglee — Mon, 30 May 2016 08:39:53 GMT

ubuntu 12.04

kernel 3.0.35 LTIB

i.mx6DL sabresd board.

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Hello !

I want to make function below image.

I use ov5640.c and mxc_v4l2_capture.c device driver and mxc_v4l2_capture.c application file.

when i get test image use mxc_v4l2_capture.c application file, i can get 640x480 size and 1024x768 size images.

1. When i get the image data from fpga use YUYV Format, I can not receive full data.

-- I can get data U and V value. Y data are break.

example) FPGA Data : 0(Y) 1(CB) 2(Y) 3(CR) 4(Y) 5(CB) 6(Y) 7(CR) 8(Y)..........................

i.mx yuyv file : xx(Y) 1(CB) xx(Y) 3(CR) xx(Y) 5(CB) xx(Y) 7(CR) ....................

2. I want to get image 3072x3072 size.

If i will set pixel clock (F = FH * FW * FPS * BI * DF) , can i get image?

when i get test image , result is below.

./mxc_v4l2_capture_ori -iw 3072 -ih 3072 -ow 3072 -oh 3072 -i 1 -fr 15 -m 9 -c 1 3072_3072.raw
in_width = 3072, in_height = 3072
out_width = 3072, out_height = 3072
top = 0, left = 0
sensor chip is ov5640_camera
sensor supported frame size:
640x480
320x240
720x480
720x576
1280x720
1920x1080
2592x1944
176x144
1024x768
3072x3072 // add size format for me on camera_driver
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
sensor frame format: YUYV
VCO = 84000 , xvclk = 2400
sysclk = 4200
ov5640: the actual frame rate of QSXGA is 7.5fps
cam->crop_current.width=3072, cam->crop_current.height=3072
crop_bounds.width = 3072 crop_bounds.height = 3072

   Cropping Input to ipu size 3072 x 3072
mxc_v4l2_captur: page allocation failure: order:13, mode:0xd1
[<80048e34>] (unwind_backtrace+0x0/0xf8) from [<800c0a38>] (warn_alloc_failed+0xc8/0x100)
[<800c0a38>] (warn_alloc_failed+0xc8/0x100) from [<800c2f70>] (__alloc_pages_nodemask+0x4c8/0x6cc)
[<800c2f70>] (__alloc_pages_nodemask+0x4c8/0x6cc) from [<8004bda0>] (__dma_alloc+0xa4/0x300)
[<8004bda0>] (__dma_alloc+0xa4/0x300) from [<8004c5d8>] (dma_alloc_coherent+0x54/0x60)
[<8004c5d8>] (dma_alloc_coherent+0x54/0x60) from [<7f0194c4>] (mxc_v4l_do_ioctl+0x56c/0x208c [mxc_v4l2_capture])
[<7f0194c4>] (mxc_v4l_do_ioctl+0x56c/0x208c [mxc_v4l2_capture]) from [<8034c278>] (video_usercopy+0x98/0x4d4)
[<8034c278>] (video_usercopy+0x98/0x4d4) from [<8034b814>] (v4l2_ioctl+0x11c/0x138)
[<8034b814>] (v4l2_ioctl+0x11c/0x138) from [<801017c4>] (do_vfs_ioctl+0x80/0x54c)
[<801017c4>] (do_vfs_ioctl+0x80/0x54c) from [<80101cc8>] (sys_ioctl+0x38/0x5c)
[<80101cc8>] (sys_ioctl+0x38/0x5c) from [<80041fc0>] (ret_fast_syscall+0x0/0x30)
Mem-info:
DMA per-cpu:
CPU    0: hi:   90, btch: 15 usd:   0
Normal per-cpu:
CPU    0: hi:   18, btch:   3 usd: 15
active_anon:188 inactive_anon:139 isolated_anon:0
active_file:1890 inactive_file:6155 isolated_file:0
unevictable:0 dirty:1 writeback:0 unstable:0
free:39273 slab_reclaimable:259 slab_unreclaimable:1632
mapped:371 shmem:142 pagetables:24 bounce:0
DMA free:134816kB min:1468kB low:1832kB high:2200kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:186944kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
lowmem_reserve[]: 0 69 69 69
Normal free:22324kB min:556kB low:692kB high:832kB active_anon:752kB inactive_anon:556kB active_file:7560kB inactive_file:24620kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:71104kB mlocked:0kB dirty:4kB writeback:0kB mapped:1484kB shmem:568kB slab_reclaimable:1028kB slab_unreclaimable:6528kB kernel_stack:424kB pagetables:96kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 2*4kB 3*8kB 4*16kB 6*32kB 4*64kB 3*128kB 3*256kB 4*512kB 2*1024kB 3*2048kB 4*4096kB 5*8192kB 4*16384kB 0*32768kB = 134816kB
Normal: 310*4kB 467*8kB 165*16kB 73*32kB 42*64kB 54*128kB 24*256kB 19*512kB 5*1024kB 1*2048kB 1*4096kB 0*8192kB 0*16384kB 0*32768kB = 46688kB
154 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
131072 pages of RAM
47427 free pages
69410 reserved pages
1692 slab pages
11 pages shared
0 pages swap cached
ERROR: v4l2 capture: mxc_allocate_frame_buf failed.
v4l_capture_setup: VIDIOC_REQBUFS failed
get format failed

Re: How to get image use csi parallel port?

joanxie — Mon, 30 May 2016 09:16:48 GMT

refer to the Reference Manual, For parallel interface, the maximum speed of the interface is 240Mhz. The required

operating frequency of the interface is calculated in the following way:

F = FH * FW * FPS * BI * DF

if you use 3072x3072 resolution, F > 240M, so I don't think CSI can support this solution.

Re: How to get image use csi parallel port?

hanseunglee — Mon, 30 May 2016 11:56:27 GMT

Thank you for your time!

I think also same your opinion.

So.. if i want to get 2592x1944 size, then can i get image use pixel clock 204073344 (204Mhz)?

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How to get image use csi parallel port?

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