Just a follow up on this. I had a bit more time to dig deeper into this today.
Enabling debug output for the cx23885 driver *fixes* the issue.
I added this to my kernel command line: cx23885.debug=8
With debug mode enabled, `w_scan` can find channels and TVheadend can
successfully tune to and stream TV over the network.
It's my understanding that the debug option is supposed to only
control the verbosity of debug messages and in no way alters the
behaviour of the driver.
>From a cursory look at cx23885-core.c, there are a few if (debug > x)
sections that do additional register/memory dumps.
Perhaps these additional dumps slow down the driver enough to uncover
a subtle timing-related issue?
Further narrowing it down:
debug=3 fail
debug=4 fail
debug=5 success
cx23885-core.c:1420:
if (debug > 4)
cx23885_tsport_reg_dump(port);
I'm more than happy to help diagnose this further.
- Adam
On Sun, Apr 9, 2017 at 1:25 PM, Adam Zegelin <adam@xxxxxxxxxxx> wrote:
> Hi,
>
> I recently purchased a HauppaugeTV-quadHD DVB-T/T2/C tuner in Australia.
>
> I followed the guide on linuxtv.org available here:
> https://www.linuxtv.org/wiki/index.php/Hauppauge_WinTV-quadHD_(DVB-T/T2/C)
>
> I installed the dvb-demod-si2168-b40-01.fw firmware file.
>
> Device nodes for the card are present:
> /dev/dvb/adapter3
> /dev/dvb/adapter3/net0
> /dev/dvb/adapter3/dvr0
> /dev/dvb/adapter3/demux0
> /dev/dvb/adapter3/frontend0
> /dev/dvb/adapter2
> /dev/dvb/adapter2/net0
> /dev/dvb/adapter2/dvr0
> /dev/dvb/adapter2/demux0
> /dev/dvb/adapter2/frontend0
> /dev/dvb/adapter1
> /dev/dvb/adapter1/net0
> /dev/dvb/adapter1/dvr0
> /dev/dvb/adapter1/demux0
> /dev/dvb/adapter1/frontend0
> /dev/dvb/adapter0
> /dev/dvb/adapter0/net0
> /dev/dvb/adapter0/dvr0
> /dev/dvb/adapter0/demux0
> /dev/dvb/adapter0/frontend0
>
> I cannot get any dvb-t application to work. TvHeadend detects the
> adapters, but is unable to scan.
> w_scan fails too, for example:
> $ ./w_scan -c AU
> w_scan version 20170107 (compiled for DVB API 5.10)
> using settings for AUSTRALIA
> DVB aerial
> DVB-T AU
> scan type TERRESTRIAL, channellist 3
> output format vdr-2.0
> WARNING: could not guess your codepage. Falling back to 'UTF-8'
> output charset 'UTF-8', use -C <charset> to override
> Info: using DVB adapter auto detection.
> /dev/dvb/adapter0/frontend0 -> TERRESTRIAL "Silicon Labs
> Si2168": very good :-))
>
> Using TERRESTRIAL frontend (adapter /dev/dvb/adapter0/frontend0)
> -_-_-_-_ Getting frontend capabilities-_-_-_-_
> Using DVB API 5.10
> frontend 'Silicon Labs Si2168' supports
> DVB-T2
> INVERSION_AUTO
> QAM_AUTO
> TRANSMISSION_MODE_AUTO
> GUARD_INTERVAL_AUTO
> HIERARCHY_AUTO
> FEC_AUTO
> BANDWIDTH_AUTO not supported, trying 6/7/8 MHz.
> FREQ (42.00MHz ... 870.00MHz)
> -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_
> Scanning DVB-T...
> Scanning 7MHz frequencies...
> 177500: (time: 00:00.009) signal ok: QAM_AUTO f = 177500
> kHz I999B7C999D999T999G999Y999 (0:0:0)
> Info: no data from PAT after 2 seconds
> deleting (QAM_AUTO f = 177500 kHz I999B7C999D999T999G999Y999 (0:0:0))
> 177625: (time: 00:02.513) signal ok: QAM_AUTO f = 177625
> kHz I999B7C999D999T999G999Y999 (0:0:0)
> Info: no data from PAT after 2 seconds
> deleting (QAM_AUTO f = 177625 kHz I999B7C999D999T999G999Y999 (0:0:0))
> 184500: (time: 00:05.519) signal ok: QAM_AUTO f = 184500
> kHz I999B7C999D999T999G999Y999 (0:0:0)
> Info: no data from PAT after 2 seconds
> deleting (QAM_AUTO f = 184500 kHz I999B7C999D999T999G999Y999 (0:0:0))
> 184625: (time: 00:08.499) signal ok: QAM_AUTO f = 184625
> kHz I999B7C999D999T999G999Y999 (0:0:0)
> Info: no data from PAT after 2 seconds
> deleting (QAM_AUTO f = 184625 kHz I999B7C999D999T999G999Y999 (0:0:0))
>
>
> The `lspci` output for this card is:
> 01:00.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05)
> 02:01.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05)
> 02:02.0 PCI bridge: Pericom Semiconductor Device 2304 (rev 05)
> 03:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885
> PCI Video and Audio Decoder (rev 03)
> 04:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885
> PCI Video and Audio Decoder (rev 03)
>
> `dmesg` output for each of the CX23885 devices on boot is:
> [ 2.108823] tveeprom: Hauppauge model 166200, rev B5I6, serial# 4035886915
> [ 2.108827] tveeprom: MAC address is 00:0d:fe:8e:bf:43
> [ 2.108830] tveeprom: tuner model is SiLabs Si2157 (idx 186, type 4)
> [ 2.108833] tveeprom: TV standards ATSC/DVB Digital (eeprom 0x80)
> [ 2.108835] tveeprom: audio processor is CX23885 (idx 39)
> [ 2.108836] tveeprom: decoder processor is CX23885 (idx 33)
> [ 2.108838] tveeprom: has no radio, has IR receiver, has no IR transmitter
> [ 2.108841] cx23885: cx23885[0]: warning: unknown hauppauge model #166200
> [ 2.108842] cx23885: cx23885[0]: hauppauge eeprom: model=166200
> [ 2.108846] cx23885: cx23885_dvb_register() allocating 1 frontend(s)
> [ 2.108849] cx23885: cx23885[0]: cx23885 based dvb card
> [ 2.118763] i2c i2c-4: Added multiplexed i2c bus 7
> [ 2.118768] si2168 4-0064: Silicon Labs Si2168-B40 successfully identified
> [ 2.118772] si2168 4-0064: firmware version: B 4.0.2
> [ 2.122432] si2157 5-0060: Silicon Labs Si2147/2148/2157/2158
> successfully attached
> [ 2.122457] dvbdev: DVB: registering new adapter (cx23885[0])
> [ 2.122464] cx23885 0000:03:00.0: DVB: registering adapter 0
> frontend 0 (Silicon Labs Si2168)...
> [ 2.123007] cx23885: cx23885_dvb_register() allocating 1 frontend(s)
> [ 2.123010] cx23885: cx23885[0]: cx23885 based dvb card
> [ 2.129982] i2c i2c-4: Added multiplexed i2c bus 8
> [ 2.129987] si2168 4-0066: Silicon Labs Si2168-B40 successfully identified
> [ 2.129990] si2168 4-0066: firmware version: B 4.0.2
> [ 2.132024] si2157 5-0062: Silicon Labs Si2147/2148/2157/2158
> successfully attached
> [ 2.132043] dvbdev: DVB: registering new adapter (cx23885[0])
> [ 2.132048] cx23885 0000:03:00.0: DVB: registering adapter 1
> frontend 0 (Silicon Labs Si2168)...
> [ 2.132503] cx23885: cx23885_dev_checkrevision() Hardware revision = 0xa4
> [ 2.132511] cx23885: cx23885[0]/0: found at 0000:03:00.0, rev: 3,
> irq: 17, latency: 0, mmio: 0xdf200000
> [ 2.132625] cx23885 0000:04:00.0: enabling device (0000 -> 0002)
> [ 2.132854] cx23885: CORE cx23885[1]: subsystem: 0070:6b28, board:
> Hauppauge WinTV-QuadHD-DVB [card=56,autodetected]
>
> On use (such as via w_scan), dmesg shows the firmware is successfully loaded:
> [ 266.951738] si2168 4-0064: downloading firmware from file
> 'dvb-demod-si2168-b40-01.fw'
> [ 267.558055] si2168 4-0064: firmware version: B 4.0.11
>
> Shortly after, dmesg is spammed with errors from the CX23885 driver:
> [ 267.982887] cx23885: cx23885[0]: mpeg risc op code error
> [ 267.982958] cx23885: cx23885[0]: TS1 B - dma channel status dump
> [ 267.982963] cx23885: cx23885[0]: cmds: init risc lo : 0xffeff000
> [ 267.982966] cx23885: cx23885[0]: cmds: init risc hi : 0x00000000
> [ 267.982970] cx23885: cx23885[0]: cmds: cdt base : 0x00010580
> [ 267.982973] cx23885: cx23885[0]: cmds: cdt size : 0x0000000a
> [ 267.982976] cx23885: cx23885[0]: cmds: iq base : 0x00010400
> [ 267.982980] cx23885: cx23885[0]: cmds: iq size : 0x00000010
> [ 267.982983] cx23885: cx23885[0]: cmds: risc pc lo : 0xffeff018
> [ 267.982986] cx23885: cx23885[0]: cmds: risc pc hi : 0x00000000
> [ 267.982989] cx23885: cx23885[0]: cmds: iq wr ptr : 0x00004106
> [ 267.982993] cx23885: cx23885[0]: cmds: iq rd ptr : 0x00004100
> [ 267.982996] cx23885: cx23885[0]: cmds: cdt current : 0x00010588
> [ 267.982999] cx23885: cx23885[0]: cmds: pci target lo : 0xffff8eb0
> [ 267.983002] cx23885: cx23885[0]: cmds: pci target hi : 0x00000000
> [ 267.983005] cx23885: cx23885[0]: cmds: line / byte : 0x00070000
> [ 267.983009] cx23885: cx23885[0]: risc0:
> [ 267.983011] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983018] cx23885: cx23885[0]: risc1:
> [ 267.983019] 0xffff8bc0 [ INVALID sol eol irq2 irq1 23 22 21 20 19
> 18 cnt1 cnt0 resync count=3008 ]
> [ 267.983033] cx23885: cx23885[0]: risc2:
> [ 267.983034] 0x00000000 [ INVALID count=0 ]
> [ 267.983038] cx23885: cx23885[0]: risc3:
> [ 267.983039] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983046] cx23885: cx23885[0]: (0x00010400) iq 0:
> [ 267.983047] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983053] cx23885: cx23885[0]: iq 1: 0xffff91a0 [ arg #1 ]
> [ 267.983057] cx23885: cx23885[0]: iq 2: 0x00000000 [ arg #2 ]
> [ 267.983060] cx23885: cx23885[0]: (0x0001040c) iq 3:
> [ 267.983061] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983067] cx23885: cx23885[0]: iq 4: 0xffff9490 [ arg #1 ]
> [ 267.983070] cx23885: cx23885[0]: iq 5: 0x00000000 [ arg #2 ]
> [ 267.983073] cx23885: cx23885[0]: (0x00010418) iq 6:
> [ 267.983074] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983080] cx23885: cx23885[0]: iq 7: 0xffff8eb0 [ arg #1 ]
> [ 267.983083] cx23885: cx23885[0]: iq 8: 0x00000000 [ arg #2 ]
> [ 267.983086] cx23885: cx23885[0]: (0x00010424) iq 9:
> [ 267.983088] 0x00000000 [ INVALID count=0 ]
> [ 267.983092] cx23885: cx23885[0]: (0x00010428) iq a:
> [ 267.983093] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983099] cx23885: cx23885[0]: iq b: 0xffff82f0 [ arg #1 ]
> [ 267.983102] cx23885: cx23885[0]: iq c: 0x00000000 [ arg #2 ]
> [ 267.983105] cx23885: cx23885[0]: (0x00010434) iq d:
> [ 267.983106] 0x1c0002f0 [ write sol eol count=752 ]
> [ 267.983112] cx23885: cx23885[0]: iq e: 0xffff85e0 [ arg #1 ]
> [ 267.983115] cx23885: cx23885[0]: iq f: 0x00000000 [ arg #2 ]
> [ 267.983117] cx23885: cx23885[0]: fifo: 0x00005000 -> 0x6000
> [ 267.983119] cx23885: cx23885[0]: ctrl: 0x00010400 -> 0x10460
> [ 267.983122] cx23885: cx23885[0]: ptr1_reg: 0x00005480
> [ 267.983125] cx23885: cx23885[0]: ptr2_reg: 0x00010598
> [ 267.983128] cx23885: cx23885[0]: cnt1_reg: 0x00000019
> [ 267.983131] cx23885: cx23885[0]: cnt2_reg: 0x00000007
> [ 271.698258] cx23885: cx23885[0]: mpeg risc op code error
>
> $ uname -a
> Linux htpc-server 4.10.6-1-ARCH #1 SMP PREEMPT Mon Mar 27 08:28:22
> CEST 2017 x86_64 GNU/Linux
>
> This card works successfully on Windows 10 with the Hauppauge WinTV application.
> All 4 tuners work (the 4-up view can tune to 4 independent channels).
>
> Any help would be greatly appreciated.
>
> Regards,
> Adam
