[ivtv-users] cx18 audio always muted after updating to v4l-dvb-085961e0b1cc.tar.gz
Andy Walls
awalls at radix.net
Sat Sep 6 21:28:20 CEST 2008
On Sat, 2008-09-06 at 13:02 -0400, Richard Ayotte wrote:
> Hi,
>
> I initially had audio problems in MythTV that were later resolved at
> the end of July with this patch.
>
> http://linuxtv.org/hg/v4l-dvb/rev/6fc3c82281f3
>
> But with the latest driver I'm have a different audio problem - no
> audio at all except for the occasional screech. System sounds still
> work fine so I've ruled out sound card problems.
>
> I'm using the analog tuner on Ubuntu Hardy with the Intrepid ivtv
> package on an AMD64 Opteron with 4G RAM.
>
> Here's some system info:
>
> $ ivtvctl --version
> ivtvctl version 1.2.0 (tagged release)
>
> $ dmesg |grep cx18
> [ 261.019358] cx18: Start initialization, version 1.0.0
> [ 261.019472] cx18-0: Initializing card #0
> [ 261.019520] cx18-0: Autodetected Hauppauge card
> [ 261.020056] cx18-0: Unreasonably low latency timer, setting to 64 (was 32)
> [ 261.021537] cx18-0: cx23418 revision 01010000 (B)
> [ 261.217148] cx18-0: Autodetected Hauppauge HVR-1600
> [ 261.217195] cx18-0: VBI is not yet supported
> [ 262.090741] tuner 3-0043: chip found @ 0x86 (cx18 i2c driver #0-1)
> [ 262.131668] tuner 3-0061: chip found @ 0xc2 (cx18 i2c driver #0-1)
> [ 262.131751] cs5345 2-004c: chip found @ 0x98 (cx18 i2c driver #0-0)
> [ 262.178526] cx18-0: Disabled encoder IDX device
> [ 262.178626] cx18-0: Registered device video0 for encoder MPEG (2 MB)
> [ 262.178678] DVB: registering new adapter (cx18)
> [ 262.318897] cx18-0: DVB Frontend registered
> [ 262.318971] cx18-0: Registered device video32 for encoder YUV (2 MB)
> [ 262.319038] cx18-0: Registered device video24 for encoder PCM audio (1 MB)
> [ 262.319107] cx18-0: Registered device radio0 for encoder radio
> [ 262.319978] cx18-0: Initialized card #0: Hauppauge HVR-1600
> [ 262.320050] cx18: End initialization
> [ 278.130281] cx18-0: loaded v4l-cx23418-apu.fw firmware V00120000
> (141200 bytes)
> [ 278.500794] cx18-0: loaded v4l-cx23418-cpu.fw firmware (158332 bytes)
> [ 278.504205] cx18-0: FW version: 0.0.74.0 (Release 2007/03/12)
> [ 279.169571] cx18-0: loaded v4l-cx23418-dig.fw firmware (16382 bytes)
>
>
> $ v4l2-ctl -d /dev/video0 --log-status
>
> Status Log:
>
> [ 1163.389925] cx18-0: ================= START STATUS CARD #0
> =================
> [ 1163.411465] tveeprom 2-0050: Hauppauge model 74541, rev C6B6,
> serial# 3326793
> [ 1163.411471] tveeprom 2-0050: MAC address is 00-0D-FE-32-C3-49
> [ 1163.411475] tveeprom 2-0050: tuner model is Philips FM1236 MK5
> (idx 116, type 43)
> [ 1163.411479] tveeprom 2-0050: TV standards NTSC(M) (eeprom 0x08)
> [ 1163.411482] tveeprom 2-0050: audio processor is CX23418 (idx 38)
> [ 1163.411484] tveeprom 2-0050: decoder processor is CX23418 (idx 31)
> [ 1163.411488] tveeprom 2-0050: has radio
> [ 1163.411493] cx18-0: Video signal: present
> [ 1163.411496] cx18-0: Detected format: NTSC-M
> [ 1163.411499] cx18-0: Specified standard: NTSC-M
> [ 1163.411501] cx18-0: Specified video input: Composite 7
> [ 1163.411504] cx18-0: Specified audioclock freq: 32000 Hz
> [ 1163.411511] cx18-0: Detected audio mode: mono
> [ 1163.411514] cx18-0: Detected audio standard: no detected audio standard
> [ 1163.411517] cx18-0: Audio muted: yes
> [ 1163.411520] cx18-0: Audio microcontroller: running
> [ 1163.411523] cx18-0: Configured audio standard: automatic detection
Somehow I broke the audio microcontroller auto audio standard detection
by slowing down IO accesses to the CX23418 (by 1 PCI clock cycle
each!?). This is only a problem on 1 of my three machines: the 1 I
didn't test the change on of course.
I'll submit a quick fix to be pulled for v4l-dvb, and then try to figure
out what's going on. Until then load the module with the mmio_ndelay
parameter set to 0:
# modprobe cx18 mmio_ndelay=0
That fixes the problem for me.
> [ 1163.411526] cx18-0: Configured audio system: BTSC
> [ 1163.411529] cx18-0: Specified audio input: Tuner (In8)
> [ 1163.411532] cx18-0: Preferred audio mode: stereo
> [ 1163.412726] cs5345 2-004c: Input: 1
> [ 1163.412729] cs5345 2-004c: Volume: 0 dB
> [ 1163.412733] tda9887 3-0043: Data bytes: b=0x14 c=0x30 e=0x44
> [ 1163.412737] tuner 3-0061: Tuner mode: analog TV
> [ 1163.412740] tuner 3-0061: Frequency: 77.25 MHz
> [ 1163.412743] tuner 3-0061: Standard: 0x0000b000
> [ 1163.412747] cx18-0: Video Input: Tuner 1
> [ 1163.412749] cx18-0: Audio Input: Tuner 1
> [ 1163.412752] cx18-0: GPIO: direction 0x00003001, value 0x00003001
> [ 1163.412755] cx18-0: Tuner: TV
> [ 1163.412758] cx18-0: Stream: MPEG-2 Program Stream
> [ 1163.412761] cx18-0: VBI Format: No VBI
> [ 1163.412764] cx18-0: Video: 720x480, 30 fps
> [ 1163.412767] cx18-0: Video: MPEG-2, 4x3, Variable Bitrate,
> 4500000, Peak 6000000
> [ 1163.412772] cx18-0: Video: GOP Size 15, 2 B-Frames, GOP Closure
> [ 1163.412776] cx18-0: Audio: 32 kHz, MPEG-1/2 Layer II, 384 kbps,
> Stereo, No Emphasis, No CRC
> [ 1163.412781] cx18-0: Spatial Filter: Manual, Luma 1D Horizontal,
> Chroma 1D Horizontal, 0
> [ 1163.412785] cx18-0: Temporal Filter: Manual, 8
> [ 1163.412788] cx18-0: Median Filter: Off, Luma [0, 255], Chroma [0, 255]
> [ 1163.412791] cx18-0: Status flags: 0x00200001
> [ 1163.412794] cx18-0: Stream encoder MPEG: status 0x0000, 0% of
> 2016 KiB (63 buffers) in use
> [ 1163.412798] cx18-0: Stream encoder YUV: status 0x0000, 0% of
> 2048 KiB (16 buffers) in use
> [ 1163.412802] cx18-0: Stream encoder PCM audio: status 0x0000, 0%
> of 1008 KiB (63 buffers) in use
> [ 1163.412806] cx18-0: Read MPEG/VBI: 8210432/0 bytes
> [ 1163.412809] cx18-0: ================== END STATUS CARD #0
> ==================
>
> The odd thing from this status is that the audio is muted and it stays
> muted even when I run v4l2-ctl -c mute=0.
The audio microcontroller is free to muck with the mute control if it
thinks the audio on the tuner SIF has changed.
Regards,
Andy
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