sasamy / tw6869

tw6869/65 media bridge driver

tw6869/tw6865 V4L2 driver

Freescale/NXP i.MX6 - primary platform on which the driver is tested, more details can be found here:

https://community.freescale.com/thread/319973

Generic installation instructions:

$ make

$ sudo make install

Note: on i.MX6 linux 4.9+, you must disable MSI on the kernel command line

pci=nomsi

https://community.nxp.com/message/1021557?commentID=1021557#comment-1021557

tw6869's Issues

tw6869_vch_dma_frame_isr error

Hi,
I'm using a sabresd board as RTSP server.
It has been loaded linux 4.1.15 along with tw6869 device driver (the module version is 0.5.2).
I added the kernel's patch for NXP userptr DMA.
An avc8000nano is connected to Mini-PCIe slot on SabreSD. Two cameras are connected on channels vch0 and vch1.
The RTSP server is the Gateworks gst-rtsp-server test-launch application.

The pipelines are the following:

1. gst-variable-rtsp-server -p 9001 -u "imxv4l2videosrc device=/dev/video0 ! imxipuvideotransform deinterlace=true ! imxvideoconvert_ipu rotation=4 ! imxvpuenc_h264 bitrate=5000 ! rtph264pay name=pay0 pt=96" &

2. gst-variable-rtsp-server -p 9002 -u "imxv4l2videosrc device=/dev/video1 ! imxipuvideotransform deinterlace=true ! imxvideoconvert_ipu rotation=4 ! imxvpuenc_h264 bitrate=5000 ! rtph264pay name=pay0 pt=96" &

The RTSP clients are a SabreSD board with Android 4.3 and a couple of laptops that use VLC player.
The issue is that often, when a client disconnects and reconnects, I see lots of errors from the RTSP server's serial port, like these:
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=62917 dcount=308
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4436 dcount=256
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=62939 dcount=309
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4450 dcount=257
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=62958 dcount=310
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4469 dcount=258
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=62968 dcount=311
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4484 dcount=259
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=62986 dcount=312
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4497 dcount=260
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=62997 dcount=313
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4508 dcount=261
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=63013 dcount=314
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4524 dcount=262
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=63032 dcount=315
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch0 NOBUF seq=4546 dcount=263
tw6869 0000:01:00.0: tw6869_vch_dma_frame_isr: vch1 NOBUF seq=63042 dcount=316

I can’t understand whether the techwell device is under stress or not.
I have noticed that replacing the gstreamer plugin "imxv4l2videosrc" with "v4l2src", the problem is significantly reduced.
is there any way to improve this situation?
Thank you very much.

Kernel version

Hi,

Could you specify kernel version you used to compile this driver?
I tried on 3.19.0-47-generic Ubuntu with no luck.

For compatible with Kernel 5.4

Hi I built for imx8qxp with kernel 5.4 but video channels did not appear.
Is there any version for kernel 5.4 or What I have to change for kernel 5.4?

Note : I could work with kernel 4.19 on imx8qxp.

i can not call tw6869_vch_dma_field_isr

hi~

i want filed mode in tw6869 drive

my gst command is...
gst-launch-1.0 imxv4l2videosrc capture-mode=1 device=/dev/video0 ! imxg2dvideosink

and... try this..
gst-launch-1.0 imxv4l2videosrc capture-mode=2 ! 'video/x-raw,width=640,height=240' ! imxg2dvideosink

but it called tw6869_vch_dma_frame_isr

how can it set field mode

Kernel 4.1.x support ?

Hi
I have a custom capture card based around tw6865. I use following kernel tree and driver :
https://github.com/boundarydevices/linux-imx6/tree/boundary-imx_4.1.15_2.0.0_ga/drivers/media/pci/tw686x

The issue I have is, most of the time the capturing rate is pretty slow and who kernel freezes after few frames. And the chip only seems to work with v4l2src, not imxv4l2videosrc (this sounds problematic) !

When running the pipeline, I also see the error message :
v4l2bufferpool gstv4l2bufferpool.c:748:gst_v4l2_buffer_pool_start:v4l2src0:pool:src Uncertain or not enough buffers, enabling copy threshold

---

1. does your driver works with kernel 4.1.x ?
2. If yes, do we still need DMA USRPTR patch ?
3. To get imxv4l2videosrc to work, do we need a patch for gstreamer plugins as well ?

Thanks in Advance
Anuradha

Failure to start capture with V4L2_MEMORY_USERPTR

Use JNI to capture Video , It works fine in V4L2_MEMORY_MMAP method, but failure in V4L2_MEMORY_USERPTR with IPU and G2D

HW: SABRESD_6DL
Android: 5.1.1
Kernal: Linux version 3.14.52-141236-g279192c-dirty (dev@hejiadev) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #8 SMP PREEMPT Wed Apr 6 10:15:44 CST 2016

Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c8f84000
[00000000] *pgd=00000000
Internal error: Oops: 805 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 PID: 1283 Comm: d.openxc.webcam Not tainted 3.14.52-141236-g279192c-dirty #8
task: c9a99700 ti: c8f80000 task.ti: c8f80000
PC is at buffer_init+0x34/0x40
LR is at vb2_plane_vaddr+0x40/0x4c
pc : [] lr : [] psr: a00f0013
sp : c8f81b80 ip : 000cb000 fp : c9ebfc00
r10: 00000001 r9 : 00000000 r8 : d49403c4
r7 : d49403c0 r6 : c9ebfc0c r5 : c8f81bd4 r4 : c9ebfc00
r3 : 26200000 r2 : d49403c0 r1 : 00000000 r0 : 00000000
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user
Control: 10c53c7d Table: 18f8404a DAC: 00000015

PC: 0xc05c7054:
7054 e5812004 e5821000 e585b2a0 e58592a4 e1a05007 e5b372a0 e1580003 e2477e2a
7074 1afffff0 e1a00006 e1a0100a eb0bb2b0 e2840014 ebea0879 e3a00000 e8bd8ff8
7094 c0c92500 c09307f8 c0b529c8 e92d4010 e3a01000 e1a04000 ebff48a1 e2843e2a
70b4 e3a01000 e5902000 e1a00004 e58432a0 e58432a4 e58422a8 ebff4886 e59432a8
70d4 e5803000 e3a00000 e8bd8010 e92d41f0 e2805060 e1a04000 e590707c e24dd008
70f4 e1a00005 eb0bb344 e5943084 e3530000 0a000035 e5943004 e3530000 0a000032
7114 e5943008 e3530000 0a00002f e5946408 e2843b01 e2833008 e1560003 0a00002a
7134 e2077001 e5960004 e596c000 e3a01c01 e0843107 e3401010 e3a02c02 e3402020

LR: 0xc05992ac:
92ac e59d5004 e1530005 0afffff1 e599300c e3e0b00d e59302c0 e2800038 ebeb444f
92cc eaffffa5 e3e0b015 eaffffee e59f0008 eb0c45b0 e7f001f2 c0b4ca64 c0b4c9fc
92ec e92d4008 e5903228 e5902224 e1530001 33a00000 38bd8008 e0811081 e0800101
930c e5900240 e3500000 08bd8008 e5923018 e593302c e3530000 0a000001 e12fff33
932c e8bd8008 e1a00003 e8bd8008 e92d4008 e5903228 e5902224 e1530001 33a00000
934c 38bd8008 e0811081 e0800101 e5900240 e3500000 08bd8008 e5923018 e5933030
936c e3530000 0a000001 e12fff33 e8bd8008 e1a00003 e8bd8008 e92d0070 e1a03001
938c e5911004 e1a0c000 e2410009 e3500001 9a00002a e3510002 1a000018 e5931008

SP: 0xc8f81b00:
1b00 00000000 00000001 c0c9c5e8 d45e2468 00000000 c94e67c0 000000cb c059eb2c
1b20 00000000 c05c70d4 a00f0013 ffffffff c8f81b6c c0012498 00000000 00000000
1b40 d49403c0 26200000 c9ebfc00 c8f81bd4 c9ebfc0c d49403c0 d49403c4 00000000
1b60 00000001 c9ebfc00 000cb000 c8f81b80 c059932c c05c70d4 a00f0013 ffffffff
1b80 c9ebfc3c c05998b0 00000000 00000001 d4c13f1c 000cb000 944a1000 d49dfd34
1ba0 00000018 d45b08e8 d4001f00 d4001f00 8040003f c08ab8c4 00000000 c8f80000
1bc0 80400040 000002d0 d4001e80 d4001e80 80200012 80400040 d4001f00 d4001f00
1be0 8040003f c08ab8c4 d4001f00 d4001f00 8040003f c08ab8c4 00000000 c8f80000

FP: 0xc9ebfb80:
fb80 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fba0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbc0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbe0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fc00 00000000 00000001 00000000 00000000 00000000 00000000 00000000 00000000
fc20 00000000 00000000 00000000 00000000 00000002 00000000 00000000 00000000
fc40 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fc60 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

R2: 0xd4940340:
0340 00000004 00000002 00000003 00000000 00070007 c97bec40 c97bec40 00000000
0360 00ffffff 00000000 c05865e8 c093089c 1fef8335 800000f0 1e020fc1 00000000
0380 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
03a0 d49403a8 00000000 00000000 00000000 d49403b0 d49403b0 c9a99700 00000000
03c0 00000001 00000013 00000000 d49403a8 c97bec40 c0d083f0 c092d004 d49400d8
03e0 000002ac 00002000 00000004 00000002 c9ebfc00 c9ebf000 c9ebdc00 c9ebd800
0400 c9ebec00 c9ebe800 00000000 00000000 00000000 00000000 00000000 00000000
0420 00000000max11801_ts 1-0048: FIFO_RD_AUX_MSB read fails

00000000 00000000 00000000 00000000 00000000 00000000 00000000

R4: 0xc9ebfb80:
fb80 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fba0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbc0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbe0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fc00 00000000 00000001 00000000 00000000 00000000 00000000 00000000 00000000
fc20 00000000 00000000 00000000 00000000 00000002 00000000 00000000 00000000
fc40 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fc60 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

R5: 0xc8f81b54:
1b54 d49403c0 d49403c4 00000000 00000001 c9ebfc00 000cb000 c8f81b80 c059932c
1b74 c05c70d4 a00f0013 ffffffff c9ebfc3c c05998b0 00000000 00000001 d4c13f1c
1b94 000cb000 944a1000 d49dfd34 00000018 d45b08e8 d4001f00 d4001f00 8040003f
1bb4 c08ab8c4 00000000 c8f80000 80400040 000002d0 d4001e80 d4001e80 80200012
1bd4 80400040 d4001f00 d4001f00 8040003f c08ab8c4 d4001f00 d4001f00 8040003f
1bf4 c08ab8c4 00000000 c8f80000 80400040 000002d0 d4c89f24 d4001f00 00000000
1c14 80400040 c8f80000 2da89000 00000000 80400040 d4609100 c0620594 d4505900
1c34 80400040 c9732080 d4001f00 00000000 000002d0 c8f80000 d4001f00 00000000

R6: 0xc9ebfb8c:
fb8c 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbac 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbcc 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fbec 00000000 00000000 00000000 00000000 00000000 00000000 00000001 00000000
fc0c 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fc2c 00000000 00000002 00000000 00000000 00000000 00000000 00000000 00000000
fc4c 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
fc6c 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

R7: 0xd4940340:
0340 00000004 00000002 00000003 00000000 00070007 c97bec40 c97bec40 00000000
0360 00ffffff 00000000 c05865e8 c093089c 1fef8335 800000f0 1e020fc1 00000000
0380 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
03a0 d49403a8 00000000 00000000 00000000 d49403b0 d49403b0 c9a99700 00000000
03c0 00000001 00000013 00000000 d49403a8 c97bec40 c0d083f0 c092d004 d49400d8
03e0 000002ac 00002000 00000004 00000002 c9ebfc00 c9ebf000 c9ebdc00 c9ebd800
0400 c9ebec00 c9ebe800 00000000 00000000 00000000 00000000 00000000 00000000
0420 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000

R8: 0xd4940344:
0344 00000002 00000003 00000000 00070007 c97bec40 c97bec40 00000000 00ffffff
0364 00000000 c05865e8 c093089c 1fef8335 800000f0 1e020fc1 00000000 00000000
0384 00000000 00000000 00000000 00000000 00000000 00000000 00000000 d49403a8
03a4 00000000 00000000 00000000 d49403b0 d49403b0 c9a99700 00000000 00000001
03c4 00000013 00000000 d49403a8 c97bec40 c0d083f0 c092d004 d49400d8 000002ac
03e4 00002000 00000004 00000002 c9ebfc00 c9ebf000 c9ebdc00 c9ebd800 c9ebec00
0404 c9ebe800 00000000 00000000 00000000 00000000 00000000 00000000 00000000
0424 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Process d.openxc.webcam (pid: 1283, stack limit = 0xc8f80238)
Stack: (0xc8f81b80 to 0xc8f82000)
1b80: c9ebfc3c c05998b0 00000000 00000001 d4c13f1c 000cb000 944a1000 d49dfd34
1ba0: 00000018 d45b08e8 d4001f00 d4001f00 8040003f c08ab8c4 00000000 c8f80000
1bc0: 80400040 000002d0 d4001e80 d4001e80 80200012 80400040 d4001f00 d4001f00
1be0: 8040003f c08ab8c4 d4001f00 d4001f00 8040003f c08ab8c4 00000000 c8f80000
1c00: 80400040 000002d0 d4c89f24 d4001f00 00000000 80400040 c8f80000 2da89000
1c20: 00000000 80400040 d4609100 c0620594 d4505900 80400040 c9732080 d4001f00
1c40: 00000000 000002d0 c8f80000 d4001f00 00000000 000002d0 c8f80000 2da89000
1c60: 00000000 0005ab38 00000000 c00e9ee0 d4505600 c8f81cb8 d4609100 c0620594
1c80: d4505900 00000503 d4506780 c062d520 c9732080 c0620594 c8563dc0 0000001e
1ca0: d4c1d000 c06299c8 c9a99700 00000000 d4505900 0000001e 00000001 c06343a8
1cc0: c97326c0 c8563dc0 c9732b40 00000001 d4505900 c8f81da8 00000000 00000000
1ce0: d4505900 c0628104 00000000 c8f81e40 00000001 00000001 c8f81d18 c8f81d18
1d00: 00040000 c02c4958 00000000 c8f81da8 c8f81d5c c08b3e78 c8f81d5c c08b3b70
1d20: 00000000 c005a0e0 00000000 000004d0 c072b178 00000100 00000069 d49a3438
1d40: c00ffc6c 00000000 d49a3444 00000001 000000c3 00000001 00000001 c00ffccc
1d60: 00000000 c08b3e78 00000000 c08b3b70 00000001 c9ebfc00 c8f81e48 d49403c0
1d80: d4c17df8 00000002 c97bec40 c093089c 00000000 c059a9b0 c82a2300 d49403c0
1da0: c9ebfc00 c8f81e48 00000002 c059c2cc c059c42c c82a2300 c8f81e48 c093089c
1dc0: c97bec40 c05886dc c8f81e48 d4940180 c044560f c0ce3c3c c82a2300 c058b4a8
1de0: c872fcc0 00000000 c8f80000 00000000 c8f81e48 00000000 00000000 00000000
1e00: 00000000 00000000 00000000 ffffffff ffffffff c044560f befabf10 00000000
1e20: 00000044 00000000 00000000 c8f81e48 00000000 c058a694 00000000 00000003
1e40: c82a2300 c058b260 00000000 00000001 00000000 00000000 00000000 00000000
1e60: 00000000 00000000 00000000 00000000 00000000 00000000 00000002 944a1000
1e80: 000cb000 00000000 00000000 00000000 d22e5520 c0126a84 00000000 00000000
1ea0: d49cb180 00000000 00000000 d49cb188 00000000 00000000 00000000 00000000
1ec0: 00000000 0000002a d49cb180 c82a2300 d49403a8 c044560f d4940180 befabf10
1ee0: c8f80000 00000000 12c01080 c0586b84 d4a05dd8 befabf10 c82a2300 c044560f
1f00: 00000019 c00fee70 befaba4e 00000002 befaba58 00000008 befaba84 d4a05dd8
1f20: 00000001 0000560f d4a07330 00000001 c8f80000 00000000 12c01080 c02cba9c
1f40: 0000560f c8f81f58 00000006 c8726550 d21cb770 0000560f 0000000b c8f81f4c
1f60: 12c01080 c82a2301 c82a2300 befabf10 c044560f 00000019 c8f80000 00000000
1f80: 12c01080 c00ff40c befabee8 00000000 00000019 c044560f 00000036 c000e564
1fa0: 00000000 c000e3e0 00000000 00000019 00000019 c044560f befabf10 befabee8
1fc0: 00000000 00000019 c044560f 00000036 befabf10 000002d0 a3d13a20 12c01080
1fe0: befabf10 befabed8 b6ea6799 b6e8e44c 800f0010 00000019 b68d2205 b68d0c2d
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Code: e58432a4 e58422a8 ebff4886 e59432a8 (e5803000)
---[ end trace 65d4fd5acf6a79b6 ]---
Kernel panic - not syncing: Fatal exception
CPU1: stopping
CPU: 1 PID: 1296 Comm: GCDaemon Tainted: G D 3.14.52-141236-g279192c-dirty #8
from
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Exception stack(0xc808bfb0 to 0xc808bff8)
bfa0: b48df1f0 4ffdfa28 4fe9b000 b4874120
bfc0: 504a7c3c 504a6600 b3c0a458 00005be8 0000058a b3c0a458 b3c0a450 00000001
bfe0: 00010000 b3c0a3e8 b46267ef b46267e8 80070030 ffffffff
Rebooting in 5 seconds..

Issue when using gstreamer-imx to record 5 camera stream simultaneously

Hi,

I try to use gstreamer-imx to record 5 camera stream simultaneously, as the following

                   FPS            Resolution          EncodingBitrate

camera0 30 1280x720 5M
camera1 30 720x480 2M
camera2 30 720x480 2M
camera3 30 720x480 2M
camera4 30 720x480 2M

But when I start recording, it keeps showing the message like

tw6869 0000:01:00.0: tw6869_dma_reset: DMA 0
tw6869 0000:01:00.0: tw6869_dma_reset: DMA 1
tw6869 0000:01:00.0: tw6869_dma_reset: DMA 2
tw6869 0000:01:00.0: tw6869_dma_reset: DMA 3

after a while, and finally the following message show up, then from camera1 to camera4 recording are all stop, only camera0 still running

tw6869 0000:01:00.0: tw6869_dma_reset: DMA 0: forced OFF
tw6869 0000:01:00.0: tw6869_dma_reset: DMA 1: forced OFF
tw6869 0000:01:00.0: tw6869_dma_reset: DMA 2: forced OFF
tw6869 0000:01:00.0: tw6869_dma_reset: DMA 3: forced OFF

I use linux kernel version imx6qsabresd 3.14.52-1.1.1, and the camera drvier using tw6869 with updated patch for kernel

Is there any performance issue when recording 5 camera simultaneously by using use gstreamer-imx and tw6869 driver? any suggestion will be welcome

Best Regards,

Huang