[PATCH] mga_vid multi device support (was: [MPlayer-dev-eng] [PATCH] mga_vid.o: choose device with module parameter --> multihead video)
kinali at gmx.net
Sun Aug 31 10:49:07 CEST 2003
On Mon, 25 Aug 2003 17:14:22 +0200
Attila Kinali <kinali at gmx.net> wrote:
> The attached patch does following:
> * Add multi device support.
> For the moment up to 16 cards are supported.
> More can be added easily by changing 2 defines.
> This makes 90% of the patch (mostly stupid s/$var/card->$var/)
> The different devices can be accessed by different minor
> numbers (0-15):
> mknod /dev/mga_vid0 c 178 0
> mknod /dev/mga_vid1 c 178 1
> mknod /dev/mga_vid2 c 178 2
> mknod /dev/mga_vid3 c 178 3
> ln -s mga_vid /dev/mga_vid
> * Change the devfs code to let the kernel assign us
> a major and a minor number (what is the sense behind
> using devfs anyways if we dont do that ?)
> Subdevices for the different cards are created.
> mga_vid uses the first card (for compatibility)
> * Fix a possible error when mmap() is called before
> the card is configured by a ioctl().
If there isnt a reason against it, i'll commit this patch this evening.
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