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
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 <?>
[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
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