Mailing List Archive: RE: Success - Setting Up 2 Hauppauge Cards - btaud io

Hi,

>> #This is the standard alias line for bttv not sure meaning
>> alias char-major-81 bttv

I think that this is just a link to signify that the bttv driver is required
to successfully access char devices of major device number 81. If the device
is accessed, the driver is autoloaded.

I'm sure someone will butt in to correct me, if I'm wrong. :)

Regards,
Ralph

-----Original Message-----
From: John Freer [mailto:john_freer@yahoo.com]
Sent: 26 March 2003 15:20
To: mythtv-users@snowman.net
Subject: [mythtv-users] Success - Setting Up 2 Hauppauge Cards - btaudio -
modules.conf

Hi All:
<Stuff>

#TV Cards
#This is the standard alias line for bttv not sure meaning
alias char-major-81 bttv

<more stuff>

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Ralph Little wrote:
> Hi,
>
>
>>>#This is the standard alias line for bttv not sure meaning
>>>alias char-major-81 bttv
>>
>
> I think that this is just a link to signify that the bttv driver is required
> to successfully access char devices of major device number 81. If the device
> is accessed, the driver is autoloaded.
>
> I'm sure someone will butt in to correct me, if I'm wrong. :)

Hey, I'll butt in even though you are correct ;-).

This says to load bttv and it's prerequsites when you access
any device with major number 81, usually /dev/video*

However, if you have more than one v4l device and they use
different drivers, only the videodev module is common and
the other modules are specific to the minor number:

alias char-major-81 videodev
alias char-major-81-0 km_drv # ATI All-in-Wonder
alias char-major-81-1 bttv # WinTV GO

If you only have bttv cards, major-81 is bttv and will work
even though it isn't strictly correct.

-- bjm