Status of CX25821 PCI-E capture driver

DISCUSSION Donald Bailey 3 participants 3 messages Oct 16, 2009 Media (V4L/DVB)

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Donald Bailey

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2009-10-16 12:47 UTC #0 lore raw

I recently picked up a 16 port DVR card from China which uses two CX25821 chips. I compiled the staging driver for it and was able to load it successfully with kernel 2.6.32-rc2. But I can't find any /dev devices to get at the inputs. I created a character device with a major/minor of 81/0 but am unable to open it.

What device major/minor should I be using or is the driver that far yet? Do I need to add a card definition to get this going?

Again, I'm using kernel 2.6.32-rc2 with the CX25821 staging module.

[root@mary dev]# uname -a
Linux mary 2.6.32-rc2 #1 SMP Tue Sep 29 16:03:18 ADT 2009 x86_64 x86_64 x86_64 GNU/Linux

dmesg output when module loaded:

Linux video capture interface: v2.00
cx25821: module is from the staging directory, the quality is unknown, you have been warned. cx25821 driver version 0.0.106 loaded

lspci -nnvvv output:

07:00.0 Multimedia video controller [0400]: Conexant Systems, Inc. Device [14f1:8210]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 10
Region 0: Memory at dfc00000 (64-bit, non-prefetchable) [size=2M]
Capabilities: [40] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns,
L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 <2us, L1 <4us
ClockPM- Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk-
DLActive- BWMgmt- ABWMgmt-
Capabilities: [80] Power Management version 3
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [90] Vital Product Data <?>
Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+
Count=1/1 Enable-

       Address: 0000000000000000  Data: 0000

Capabilities: [100] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
RxOF- MalfTLP- ECRC- UnsupReq- ACSVoil-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt-
RxOF- MalfTLP- ECRC- UnsupReq- ACSVoil-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt-
RxOF+ MalfTLP+ ECRC- UnsupReq- ACSVoil-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr-
CESta: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
Capabilities: [200] Virtual Channel <?>

08:00.0 Multimedia video controller [0400]: Conexant Systems, Inc. Device [14f1:8210]
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 10
Region 0: Memory at dfe00000 (64-bit, non-prefetchable) [size=2M]
Capabilities: [40] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns,
L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1,
Latency L0 <2us, L1 <4us
ClockPM- Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk-
DLActive- BWMgmt- ABWMgmt-
Capabilities: [80] Power Management version 3
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0+,D1+,D2+,D3hot+,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [90] Vital Product Data <?>
Capabilities: [a0] Message Signalled Interrupts: Mask- 64bit+
Count=1/1 Enable-

       Address: 0000000000000000  Data: 0000

[root@mary dev]# lsmod

Module                  Size  Used by
berry_charge            3293  0
cx25821               111230  0
fuse                   54209  2
nvidia              10302077  26
sit                     8840  0
tunnel4                 2475  1 sit
v4l2_common            14983  1 cx25821
videodev               33367  2 cx25821,v4l2_common
v4l1_compat            11804  1 videodev
v4l2_compat_ioctl32     9328  1 videodev
videobuf_dma_sg        10088  1 cx25821
videobuf_core          15015  2 cx25821,videobuf_dma_sg
btcx_risc               3586  1 cx25821
tveeprom               12611  1 cx25821
ipt_MASQUERADE          1735  1
iptable_nat             3692  1
nf_nat                 15263  2 ipt_MASQUERADE,iptable_nat
sco                     8020  2
bridge                 43131  0
stp                     1871  1 bridge
bnep                   10212  2
l2cap                  25937  3 bnep
crc16                   1519  1 l2cap
bluetooth              48464  5 sco,bnep,l2cap
rfkill                 15696  1 bluetooth
sunrpc                184847  1
ipv6                  262918  77 sit
dm_multipath           14064  0
raid1                  18477  1
uinput                  6789  0
snd_intel8x0           27964  3
snd_ac97_codec        112068  1 snd_intel8x0
ac97_bus                1258  1 snd_ac97_codec
snd_seq_dummy           1622  0
snd_seq_oss            28403  0
snd_seq_midi_event      5828  1 snd_seq_oss
snd_seq                49546  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss            39558  0
snd_mpu401              6596  0
firewire_ohci          20222  0
firewire_core          41233  1 firewire_ohci
snd_mixer_oss          13386  1 snd_pcm_oss
snd_mpu401_uart         5880  1 snd_mpu401
snd_pcm                75376  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_rawmidi            19255  1 snd_mpu401_uart
snd_seq_device          5769  4 snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi
snd_timer              18466  2 snd_seq,snd_pcm
i2c_nforce2             5677  0
k8temp                  3579  0
ppdev                   5322  0
snd                    57873  19 snd_intel8x0,snd_ac97_codec,snd_seq_dummy,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mpu401,snd_mixer_oss,snd_mpu401_uart,snd_pcm,snd_rawmidi,snd_seq_device,snd_timer
parport_pc             20715  0
hwmon                   1758  1 k8temp
forcedeth              47910  0
floppy                 52095  0
parport                32662  2 ppdev,parport_pc
soundcore               6047  1 snd
crc_itu_t               1539  1 firewire_core
pcspkr                  1854  0
sky2                   40941  0
sata_sil24             11675  0
snd_page_alloc          7109  2 snd_intel8x0,snd_pcm
ns558                   2378  0
i2c_core               18993  6 cx25821,nvidia,v4l2_common,videodev,tveeprom,i2c_nforce2
gameport                8936  2 ns558
pata_amd               10803  0
ata_generic             3419  0
pata_acpi               3267  0
sata_nv                20228  8
raid456                44977  1
async_raid6_recov       5098  1 raid456
async_pq                4115  2 raid456,async_raid6_recov
async_xor               3122  3 raid456,async_raid6_recov,async_pq
xor                     4608  1 async_xor
async_memcpy            1298  2 raid456,async_raid6_recov
async_tx                2097  5 raid456,async_raid6_recov,async_pq,async_xor,async_memcpy
raid6_pq               78519  3 raid456,async_raid6_recov,async_pq

Steven Toth

2009-10-16 14:27 UTC #1 lore raw

Quoted 5 lines · Donald Bailey

I recently picked up a 16 port DVR card from China which uses two CX25821 chips. I compiled the staging driver for it and was able to load it successfully with kernel 2.6.32-rc2. But I can't find any /dev devices to get at the inputs. I created a character device with a major/minor of 81/0 but am unable to open it.

We're planning to do some work inside KernelLabs on that particular driver. We have access to hardware and are looking to stabilize and improve the overall quality of the driver to a commercial production grade. I don't have any timescales as this is currently and unfunded project but you're not alone, the driver does need some major improvements.

Regards,

Signature · 2 lines

Steven Toth - Kernel Labs
http://www.kernellabs.com

Aleksandr V. Piskunov

2009-10-16 14:52 UTC #2 lore raw

Quoted 7 lines · Steven Toth

Quoted 5 lines · Donald Bailey
I recently picked up a 16 port DVR card from China which uses two CX25821 chips. I compiled the staging driver for it and was able to load it successfully with kernel 2.6.32-rc2. But I can't find any /dev devices to get at the inputs. I created a character device with a major/minor of 81/0 but am unable to open it.

Quoted 6 lines

We're planning to do some work inside KernelLabs on that particular driver. We have access to hardware and are looking to stabilize and improve the overall quality of the driver to a commercial production grade. I don't have any timescales as this is currently and unfunded project but you're not alone, the driver does need some major improvements.

Mmm, any links to a reasonably priced CX25821 capture cards?