Unknown CX23885 device

(please CC, I'm not subscribed yet)

Hey Linux-DVB people

I'm trying to make an as-of-yet unsupported CX23885 device work in Linux.

I've tested that the device is not supported using the newest snapshot of the DVB drivers. They did support a bunch of extra devices compared to the standard ubuntu driver, but to no avail.

This is what I know about the device:

### physical description ###

The device is a small mini-PCIe device currently installed in my Thinkpad T61p notebook. It did not originate there, but I managed to fit it in.

It has an "Avermedia" logo on top, but no other discernable markings. I've tried removing the chip cover, but I can't see any other major chips than the cx23885. I can take a second look, if I know what to look for.

### pci info ###

$ sudo lspci -s 02:00.0 -vv
02:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 PCI Video and Audio Decoder (rev 02)
        Subsystem: Avermedia Technologies Inc Device c139
        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 16
        Region 0: Memory at d7a00000 (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 2
                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+ 
Queue=0/0 Enable-
                Address: 0000000000000000  Data: 0000
        Capabilities: [100] Advanced Error Reporting <?>
        Capabilities: [200] Virtual Channel <?>
        Kernel driver in use: cx23885
        Kernel modules: cx23885

I've tried several different card=X settings for "modprobe cx23885", and a few of them result in creation of /dev/dvb devices, but none of them really seem towork.

What can I try for a next step?

Med venlig hilsen
Christian Iversen

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How are you attaching the video/audio/antenna/etc. input to the pcie card? I don't imagine the card is much use without external connectors.

Alex

For now, I'm using a wifi-antenna lead to connect it. I think that should at least work as a proof-of-concept. Even if I can't tune in any channels, I should still be able to control the card, which I can't right now.

When/if it has a chance of working, I'm planning to mod my laptop to fit an antenna lead, properly mounted.

Any suggestions for proceeding?

Med venlig hilsen
Christian Iversen

http://kernellabs.com/hg/~stoth/cx23885-mpx/

Try this and if necessary module option card=29.

Any good?

- Steve

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

	On 2010-07-27 22:09, Steven Toth wrote:

Without card=29, nothing was found. This is with card=29, but still no /dev/dvb nodes.

[ 6287.278003] ---- 2010-07-27 22:38:24 ----
[ 6288.248799] Linux video capture interface: v2.00
[ 6288.268106] cx23885 driver version 0.0.2 loaded
[ 6288.268273] cx23885 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[ 6288.268276] cx23885[0]: cx23885_dev_setup() Memory configured for PCIe bridge type 885
[ 6288.268396] CORE cx23885[0]: subsystem: 1461:c139, board: MPX-885 [card=29,insmod option]
[ 6288.268398] cx23885[0]: cx23885_pci_quirks()
[ 6288.268402] cx23885[0]: cx23885_dev_setup() tuner_type = 0x0 tuner_addr = 0x0
[ 6288.268404] cx23885[0]: cx23885_dev_setup() radio_type = 0x0 radio_addr = 0x0
[ 6288.268405] cx23885[0]: cx23885_reset()
[ 6288.368410] cx23885[0]: cx23885_sram_channel_setup() Configuring channel [VID A]
[ 6288.368421] cx23885[0]: cx23885_sram_channel_setup() Erasing channel [ch2]
[ 6288.368423] cx23885[0]: cx23885_sram_channel_setup() Configuring channel [TS1 B]
[ 6288.368436] cx23885[0]: cx23885_sram_channel_setup() Erasing channel [ch4]
[ 6288.368437] cx23885[0]: cx23885_sram_channel_setup() Erasing channel [ch5]
[ 6288.368439] cx23885[0]: cx23885_sram_channel_setup() Configuring channel [TS2 C]
[ 6288.368452] cx23885[0]: cx23885_sram_channel_setup() Configuring channel [TV Audio]
[ 6288.368467] cx23885[0]: cx23885_sram_channel_setup() Erasing channel [ch8]
[ 6288.368469] cx23885[0]: cx23885_sram_channel_setup() Erasing channel [ch9]
[ 6288.399900] cx25840 2-0044: cx23885 A/V decoder found @ 0x88 (cx23885[0])
[ 6288.404410] cx25840 2-0044: firmware: requesting v4l-cx23885-avcore-01.fw
[ 6289.042011] cx25840 2-0044: loaded v4l-cx23885-avcore-01.fw firmware (16382 bytes)
[ 6289.054227] cx23885[0]: registered device video0 [v4l2]
[ 6289.054244] cx23885[0]: registered device vbi0
[ 6289.054320] cx23885[0]: registered ALSA audio device
[ 6289.068837] cx23885_dev_checkrevision() Hardware revision = 0xb0
[ 6289.068845] cx23885[0]/0: found at 0000:02:00.0, rev: 2, irq: 16, latency: 0, mmio: 0xd7a00000
[ 6289.068855] cx23885 0000:02:00.0: setting latency timer to 64
[ 6289.068859] IRQ 16/cx23885[0]: IRQF_DISABLED is not guaranteed on shared IRQs

What's the preferred method of pulling the source, btw?

I just downloaded a .tar.gz. It works, but updating is not pleasant :)

Med venlig hilsen
Christian Iversen