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Hello
I try to port tvp5150 ... finally these errors are displayed :

[CSI_DEBUG]buf ptr=ee041000
[CSI_DEBUG] Nobody is waiting on this buffer,buf = 0xee041000
[CSI_DEBUG]buf ptr=eead9280
[CSI_DEBUG]csi_buf_addr_y=482e4000
[CSI_DEBUG]csi_buf_addr_cb=48338600
[CSI_DEBUG]csi_buf_addr_cr=4834d780
[CSI_DEBUG]csi_isr
[CSI_DEBUG]buf ptr=ee041680
[CSI_DEBUG] Nobody is waiting on this buffer,buf = 0xee041680
[CSI_DEBUG]buf ptr=eead9b00
[CSI_DEBUG]csi_buf_addr_y=48363000
[CSI_DEBUG]csi_buf_addr_cb=483b7600
[CSI_DEBUG]csi_buf_addr_cr=483cc780
[CSI_DEBUG]csi_isr
[CSI_DEBUG]buf ptr=eead9280
[CSI_DEBUG] Nobody is waiting on this buffer,buf = 0xeead9280
[CSI_DEBUG]buf ptr=eead9380
[CSI_DEBUG]csi_buf_addr_y=483e2000
[CSI_DEBUG]csi_buf_addr_cb=48436600
[CSI_DEBUG]csi_buf_addr_cr=4844b780
[CSI_DEBUG]csi_isr
[CSI_DEBUG]buf ptr=eead9b00
[CSI_DEBUG] Nobody is waiting on this buffer,buf = 0xeead9b00
[CSI_DEBUG]buf ptr=eead9100
[CSI_DEBUG]csi_buf_addr_y=48461000
[CSI_DEBUG]csi_buf_addr_cb=484b5600
[CSI_DEBUG]csi_buf_addr_cr=484ca780
[CSI_DEBUG]csi_isr
[CSI_DEBUG]buf ptr=eead9380
[CSI_DEBUG] Nobody is waiting on this buffer,buf = 0xeead9380
[CSI_DEBUG]No more free frame on next time
[CSI_DEBUG]csi_isr
[CSI_DEBUG]buf ptr=eead9100
[CSI_DEBUG] Nobody is waiting on this buffer,buf = 0xeead9100
[CSI_DEBUG]No more free frame
[CSI_DEBUG]csi_isr
<6>[CSI_ERR]No active queue to serve
[CSI_DEBUG]csi_isr
<6>[CSI_ERR]No active queue to serve
[CSI_DEBUG]csi_isr
<6>[CSI_ERR]No active queue to serve

And with your CSI driver These errors are displayed:

ubieaio login: <6>Linux video capture interface: v2.00
<2>[CSI_DRIVER]Welcome to CSI driver
[ 200.612929] [CSI_DRIVER]Welcome to CSI driver
<2>[CSI_DRIVER]- csi_init
[ 200.621131] [CSI_DRIVER]- csi_init
<2>[CSI_DRIVER]------------------- csi_probe start>>
[ 200.632364] [CSI_DRIVER]------------------- csi_probe start>>
<2>[CSI_DRIVER]sizeof struct csi_camera:732
[ 200.643492] [CSI_DRIVER]sizeof struct csi_camera:732
<2>[CSI_DRIVER]pcam->id:1
[ 200.652020] [CSI_DRIVER]pcam->id:1
<2>[CSI_DRIVER]v4l2_device_register start
[ 200.660349] [CSI_DRIVER]v4l2_device_register start
<2>[CSI_DRIVER]v4l2_device_registered
[ 200.669752] [CSI_DRIVER]v4l2_device_registered
<2>[CSI_DRIVER]vd alloc
[ 200.677436] [CSI_DRIVER]vd alloc
<2>[CSI_DRIVER]vd register start
[ 200.684589] [CSI_DRIVER]vd register start
<2>[CSI_DRIVER]video_register_deviceed
[ 200.693944] [CSI_DRIVER]video_register_deviceed
<2>[CSI_DRIVER]V4L2 device registered as video0
[ 200.703909] [CSI_DRIVER]V4L2 device registered as video0
<2>[CSI_DRIVER]vb2 que init done
<2>[CSI_DRIVER]- csi_open
<2>[CSI_DR[ 200.713365] [CSI_DRIVER]vb2 que init done
IVER]ioctl -[ 200.715731] [CSI_DRIVER]- csi_open
vidioc_querycap=sun4i_csi
<2>[CSI_D[ 200.727562] [CSI_DRIVER]ioctl - vidioc_querycap=sun4i_csi
RIVER]- csi_close
<2>[CSI_DR[ 200.735600] [CSI_DRIVER]- csi_close
IVER]++Close++++++++Error1:0 Error2:0 Error3:0 Error4:0 Error5:0 Error6:0 Error7:0 Error8:0 Error9:0 Error10:0 Error11:0
<1>Unable to h[ 200.750543] [CSI_DRIVER]++Close++++++++Error1:0 Error2:0 Error3:0 Error4:0 Error5:0 Error6:0 Error7:0 Error8:0 Error9:0 Error10:0 Error10
andle kernel NULL pointer dereference at virtual address 00000000
<1>pgd = ee118[ 200.770087] Unable to handle kernel NULL pointer dereference at virtual address 00000000
000
<1>[00000000][ 200.779820] pgd = ee118000
*pgd=6ea1e831,[ 200.784860] [00000000] *pgd=6ea1e831 *pte=00000000,, *pte=00000000 *ppte=00000000
<0>Internal er , *ppte=00000000
ror: Oops: 17 [#1] PREEMPT SMP ARM
Modules linke[ 200.798353] Internal error: Oops: 17 [#1] PREEMPT SMP ARM
d in: [ 200.805572] Modules linked in:sun4i_csi1(+) sun4i_csi1(+)videobuf2_dma_contig videobuf2_dma_contigvideobuf2_memops videobuf2_memopsvideobuf2_i
CPU: 1 Not ta i
inted (3.4.103MTA-v1.3+ #52)
PC is at _wake_up[ 200.828021] CPU: 1 Not tainted (3.4.103MTA-v1.3+ #52)
common+0x20/0x78
LR is at __wake_up+[ 200.836626] PC is at __wake_up_common+0x20/0x78
0x3c/0x50
pc : [] [ 200.843767] LR is at __wake_up+0x3c/0x50
lr : [] psr: 60010093
sp : ee12feb0 ip : c07aabb0 fp : ee12fed4
r10: ee91ca88 r9 :[ 200.856524] pc : [] lr : [] psr: 60010093
00000010 r8 : 00000000
r[ 200.856528] sp : ee12feb0 ip : c07aabb0 fp : ee12fed4
7 : 00000003 r6 : 00000000 r5 : ef09ad7c r4 : ef09ad74
r3 : 00000000 r2 : [ 200.866683] r10: ee91ca88 r9 : 00000010 r8 : 00000000
00000000 r1 : 00000003 r0 : ff[ 200.877100] r7 : 00000003 r6 : 00000000 r5 : ef09ad7c r4 : ef09ad74
fffff4
Flags: nZCv IRQs o[ 200.894015] r3 : 00000000 r2 : 00000000 r1 : 00000003 r0 : fffffff4
ff FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c5387d [ 200.906427] Flags: nZCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
Table: 6e11806a DAC: 00000015

PC: 0xc0053a34:[ 200.918057] Control: 10c5387d Table: 6e11806a DAC: 00000015

3a34 e1a00005 e[ 200.925440]

How to solve this problems?

thanks a lot.
Uploading device.zip…

Hi, this not an issue, it is only a question.

Is it possible to get SXGA with subsampling in order to reach more FPS than scaling solution ?.

Regards.

Hi ! This is not an issue but a query.

Thank you for publishing your code. It is very helpful.

I am trying to obtain a 320x240 crop from a (2592x1944) on OV5640 setup.

I used the zoom_image function in your code to generate values for cropping. But I get only black image returned as data from sensor.

All the register values generated by the function are set in the same order.

Is there anything else I should look at ?

Regards,
Anup

Hi, I've been trying to find a better driver for the Ov5640 camera for a few months now and although I found a few alternatives I've been having problems on how to use them, what I mean is for using an alternative such as the one on this repository should I try to insmod the solution or compile a new kernel altogether ?