Re: em28xx: Compro VideoMate For You sound problems

[Vitaly Wool <vital@embeddedalley.com>]

Hello Mauro,

Mauro Carvalho Chehab wrote:

> On Tue, 24 Feb 2009 10:47:43 +0300
> Vitaly Wool <vital@embeddedalley.com> wrote:
>
>> Hello,
>>
>> about half a year ago I posted the patch that basically enabled Compro 
>> VideoMate For You USB TV box support.
>> The main problem is I couldn't get the sound working. I was poking 
>> around that for some time then but gave up soon. Now I spent some time 
>> debugging the problem without any real success, tried the new 
>> (alternative) version of the em28xx driver suite from Markus and had no 
>> luck with it either.
>>
>> So I kind of decomposed the box and found out the audio decoder chip 
>> used there was Philips TDA9874A. As far as I can see, it's not supported 
>> within the em28xx suite although it is for other TV tuner drivers. Could 
>> anyone please give me some guidance on how to add that to em28xx to 
>> shorten my way to getting the sound working on that good ol' box?
>
> Could you please try to load tvaudio module and see what happens? Please probe
> it with debug info and post here the results.
here it is:

[78735.039693] tvaudio: TV audio decoder + audio/video mux driver

[78735.039693] tvaudio: known chips: tda9840, tda9873h, tda9874h/a, tda9850, tda9855, tea6300, tea6320, tea6420, tda8425, pic16c54 (PV951), ta8874z

[78735.039693] tvaudio' 1-0058: chip found @ 0xb0

[78735.049368] tvaudio' 1-0058: tvaudio': chip_read2: reg254=0x11

[78735.068049] tvaudio' 1-0058: tvaudio': chip_read2: reg255=0x2

[78735.068056] tvaudio' 1-0058: tda9874a_checkit(): DIC=0x11, SIC=0x2.

[78735.068059] tvaudio' 1-0058: found tda9874a.

[78735.068063] tvaudio' 1-0058: tda9874h/a found @ 0xb0 (em28xx #0)

[78735.068066] tvaudio' 1-0058: tda9874h/a: chip_write: reg0=0x0

[78735.079304] tvaudio' 1-0058: tda9874h/a: chip_write: reg1=0xc0

[78735.091299] tvaudio' 1-0058: tda9874h/a: chip_write: reg2=0x2

[78735.103300] tvaudio' 1-0058: tda9874h/a: chip_write: reg11=0x80

[78735.115291] tvaudio' 1-0058: tda9874h/a: chip_write: reg12=0x0

[78735.126706] tvaudio' 1-0058: tda9874h/a: chip_write: reg13=0x0

[78735.138668] tvaudio' 1-0058: tda9874h/a: chip_write: reg14=0x1

[78735.150665] tvaudio' 1-0058: tda9874h/a: chip_write: reg15=0x0

[78735.162661] tvaudio' 1-0058: tda9874h/a: chip_write: reg16=0x14

[78735.174656] tvaudio' 1-0058: tda9874h/a: chip_write: reg17=0x50

[78735.186651] tvaudio' 1-0058: tda9874h/a: chip_write: reg18=0xf9

[78735.198648] tvaudio' 1-0058: tda9874h/a: chip_write: reg19=0x80

[78735.208703] tvaudio' 1-0058: tda9874h/a: chip_write: reg20=0x80

[78735.220988] tvaudio' 1-0058: tda9874h/a: chip_write: reg24=0x80

[78735.232982] tvaudio' 1-0058: tda9874h/a: chip_write: reg255=0x0

[78735.244979] tvaudio' 1-0058: tda9874a_setup(): A2, B/G [0x00].

[78735.246530] tvaudio' 1-0058: tda9874h/a: thread started

Thanks,
   Vitaly


--
video4linux-list mailing list
Unsubscribe mailto:video4linux-list-request@redhat.com?subject=unsubscribe
https://www.redhat.com/mailman/listinfo/video4linux-list