soc-camera: timing out during capture - Re: Testing latest mx3_camera.c

[Agustin <gatoguan-os@yahoo.com>]

Hi Guennadi,

--- Guennadi Liakhovetski <g.liakhovetski@gmx.de> wrote:
> On Mon, 13 Apr 2009, Agustin wrote:
> 
> > Which patchset should one use today to have latest and most stable 
> > "mx3_camera" driver in 2.6.29?
> > 
> > [snip]
> 
> Please, use http://marc.info/?l=linux-arm-kernel&m=123866462620240&w=2 
> also notice, which patches it needs. As a basis you can take linux-next or 
> a suitable branch from git://git.pengutronix.de/git/imx/linux-2.6.git

I managed to merge your patch stack of 20090415 on top of Sascha's stack for 2.6.29.
I think that is just before the "v4l-subdev" work. Then I adapted my code to work pretty
much as your mt9p031 driver.

Now I get a timeout when trying to capture a single image, with the same hardware
configuration that is working fine with 2.6.28-next.
I can see my "Sixcam" camera dumping a few frames before the timeout.

I am not sure where to look for the problem, so here is a debug dump in case you can
point me in the right direction...


root@SixCam:~ insmod sixcam.ko 
sixcam_mod_init(): ok
Sixcam TRIGGER on Sixcam board: ATA_CS0~MCU3_26
sixcam_i2c_probe(): ok
camera 0-0: mx3_camera: Set SENS_CONF to f00, rate 19523897
sixcam_init(): initialized camera.
camera 0-0: MX3 Camera driver attached to camera 0
sixcam_video_probe(): probed camera.
mx3-camera mx3-camera.0: soc_camera: Allocated video_device c6080a00
sixcam_release(): ok
camera 0-0: MX3 Camera driver detached from camera 0

root@SixCam:~ capture --bpp 8 --size 1536x1024
mx3-camera.0: mx3_camera: requested bus width 8 bit: 0
mx3-camera.0: mx3_camera: requested bus width 15 bit: 0
mx3-camera.0: mx3_camera: requested bus width 10 bit: 0
camera 0-0: soc_camera: Found 0 supported formats.
mx3-camera.0: mx3_camera: requested bus width 8 bit: 0
mx3-camera.0: mx3_camera: Providing format Monochrome 8 bit in pass-through mode
mx3-camera.0: mx3_camera: requested bus width 15 bit: 0
mx3-camera.0: mx3_camera: Providing format Monochrome 16 bit in pass-through mode
mx3-camera.0: mx3_camera: requested bus width 10 bit: 0
mx3-camera.0: mx3_camera: Providing format Sixcam 10-bit in pass-through mode
camera 0-0: mx3_camera: Set SENS_CONF to f00, rate 19523897
sixcam_init(): initialized camera.
camera 0-0: MX3 Camera driver attached to camera 0
camera 0-0: soc_camera: camera device open
sixcam_set_fmt(): 640x480+0+0
sixcam_try_fmt(): icd->width=640 icd->height=480 fmt.pix.width=1536 fmt.pix.height=1024.
    --> fmt.pix.width=1536 fmt.pix.height=1024.
ipu-core: ipu_idmac: timeout = 0 * 10ms
ipu-core: ipu_idmac: init channel = 7
ipu-core: ipu_idmac: IDMAC_CONF 0x70, IC_CONF 0x0, IDMAC_CHA_EN 0x0, IDMAC_CHA_PRI 0x80, IDMAC_CHA_BUSY 0x0
ipu-core: ipu_idmac: BUF0_RDY 0x0, BUF1_RDY 0x0, CUR_BUF 0x0, DB_MODE 0x0, TASKS_STAT 0x3
dma dma0chan7: ipu_idmac: Found channel 0x7, irq 176
sixcam_set_fmt(): 1536x1024+0+0
camera 0-0: soc_camera: set width: 1536 height: 1024
mx3-camera.0: mx3_camera: requested bus width 8 bit: 0
mx3-camera.0: mx3_camera: Flags cam: 0x2695 host: 0xf0fd common: 0x2095
sixcam_set_bus_param(): 0x2095
mx3-camera.0: mx3_camera: Set SENS_CONF to 708
VIDIOC_S_FMT: width 1536, heightcamera 0-0: soc_camera: soc_camera_reqbufs: 1
 1024, pixelformat = 'GREY'
mx3-camera.0: videobuf_dma_contig: __videobuf_mmap_free
camera 0-0: soc_camera: mmap called, vma=0xc4f886e0
mx3-camera.0: videobuf_dma_contig: __videobuf_mmap_mapper
mx3-camera.0: videobuf_dma_contig: dma_alloc_coherent data is at addr c9000000 (size 1572864)
mx3-camera.0: videobuf_dma_contig: mmap c4fafec0: q=c8b63004 40147000-402c7000 (180000) pgoff 00084000 buf 0
mx3-camera.0: videobuf_dma_contig: vm_open c4fafec0 [count=0,vma=40147000-402c7000]
camera 0-0: soc_camera: vma start=0x40147000, size=1572864, ret=0
mx3-camera.0: videobuf_dma_contig: __videobuf_iolock memory method MMAP
camera 0-0: soc_camera: soc_camera_streamon
sixcam_start_capture(): trigger on!
ipu-core: ipu_idmac: write param mem - addr = 0x00010070, data = 0x00000000
ipu-core: ipu_idmac: write param mem - addr = 0x00010071, data = 0x00004000
ipu-core: ipu_idmac: write param mem - addr = 0x00010072, data = 0x00000000
ipu-core: ipu_idmac: write param mem - addr = 0x00010073, data = 0xFF5FF000
ipu-core: ipu_idmac: write param mem - addr = 0x00010074, data = 0x00000003
ipu-core: ipu_idmac: write param mem - addr = 0x00010078, data = 0x84000000
ipu-core: ipu_idmac: write param mem - addr = 0x00010079, data = 0x00000000
ipu-core: ipu_idmac: write param mem - addr = 0x0001007A, data = 0x3E0E2FFB
ipu-core: ipu_idmac: write param mem - addr = 0x0001007B, data = 0x00000002
ipu-core: ipu_idmac: write param mem - addr = 0x0001007C, data = 0x00000000
dma dma0chan7: ipu_idmac: Submitting sg c4e0772c
dma dma0chan7: ipu_idmac: Updated sg c4e0772c on channel 0x7 buffer 0
ipu-core: ipu_idmac: IDMAC_CONF 0x70, IC_CONF 0x0, IDMAC_CHA_EN 0x0, IDMAC_CHA_PRI 0x80, IDMAC_CHA_BUSY 0x0
ipu-core: ipu_idmac: BUF0_RDY 0x80, BUF1_RDY 0x0, CUR_BUF 0x0, DB_MODE 0x0, TASKS_STAT 0x3
ipu-core: ipu_idmac: IDMAC_CONF 0x70, IC_CONF 0x40000001, IDMAC_CHA_EN 0x80, IDMAC_CHA_PRI 0x80, IDMAC_CHA_BUSY 0x0
ipu-core: ipu_idmac: BUF0_RDY 0x80, BUF1_RDY 0x0, CUR_BUF 0x0, DB_MODE 0x0, TASKS_STAT 0x3
camera 0-0: mx3_camera: Submitted cookie 2 DMA 0x84000000
dma dma0chan7: ipu_idmac: IDMAC irq 176, buf 0
dma dma0chan7: ipu_idmac: IRQ on active buffer on channel 7, active 0, ready 0, 0, current 0!

[ ten seconds pass, and a lot of frames come out of my camera ]

capture: Select timeout. Exiting...
mx3-camera.0: videobuf_dma_contig: vm_close c4fafec0 [count=1,vma=40147000-402c7000]
mx3-camera.0: videobuf_dma_contig: munmap c4fafec0 q=c8b63004
camera 0-0: mx3_camera: Release active DMA 0x84000000 (state 3), queue not empty
camera 0-0: mx3_camera: free_buffer (vb=0xc4e076c0) 0x40147000 1572864
mx3-camera.0: videobuf_dma_contig: buf[0] freeing c9000000
ipu-core: ipu_idmac: timeout = 0 * 10ms
sixcam_release(): ok
camera 0-0: MX3 Camera driver detached from camera 0
camera 0-0: soc_camera: camera device close

Any clue?

BTW, this dump shows a few apparently unneeded calls to camera set_fmt() and get_bus_params().

Many thanks,
--Agustín.

--
Agustin Ferrin Pozuelo
Embedded Systems Consultant
http://embedded.ferrin.org
Tel. +34 610502587