Takashi Iwai wrote:
> Wu Fengguang wrote:
> > > Jaroslav Kysela wrote:
> > > > I don't agree to have only 4 slots for soundcards in the static minor
> > > > numbering. Maybe the driver should be converted to use subdevices or we
> > > > might drop the static minor number allocation at all (it might have only
> > > > impact for old distros).
> >
> > Jaroslav, will there be so many sound cards in one system?
>
> In the old time, yes. Now we have less and less PCI slots.
> In theory, we may have lots of USB audio devices, though :)
I implemented CONFIG_SND_DYNAMIC_MINORS because people had been asking
for more than eight cards. (And by now I have lots of cards too,
although my computer probably isn't very typical.)
Anyway, static numbering is needed only for systems without udev/devfs,
and there we shouldn't change it for backwards compatibility. The HDA
driver already requires kernels >= 2.6, so I don't see a problem with
requiring CONFIG_SND_DYNAMIC_MINORS to get all HDMI outputs.
> Another possible solution would be to change the minor number
> assignment to a really dynamic one. So far, due to legacy /dev/aload
> and co, we have some static restriction per card basis.
What restriction would that be? With CONFIG_SND_DYNAMIC_MINORS, we
don't allocate minors that would be used by /dev/aload*, but there are
no restrictions on the number of cards or devices.
--
Regards,
Clemens
cat /proc/asound/cards
0 [SB ]: HDA-Intel - HDA ATI SB
HDA ATI SB at 0xfe7f4000 irq 16
1 [HDMI ]: HDA-Intel - HDA ATI HDMI
HDA ATI HDMI at 0xfe9e8000 irq 19
2 [D2 ]: AV200 - Xonar D2
Asus Virtuoso 200 (rev 2) at 0xe800, irq 20
3 [YMF754 ]: YMF754 - Yamaha DS-1E (YMF754)
Yamaha DS-1E (YMF754) at 0xfebf8000, irq 22
4 [UA1A ]: USB-Audio - EDIROL UA-1A
Roland EDIROL UA-1A at usb-0000:00:12.2-4.3, full speed
5 [SC8820 ]: USB-Audio - SC-8820
Roland SC-8820 at usb-0000:00:13.0-2, full speed
6 [UM2 ]: USB-Audio - UM-2
EDIROL UM-2 at usb-0000:00:12.0-2, full speed
7 [NX ]: USB-Audio - SB Audigy 2 NX
Creative Technology Ltd SB Audigy 2 NX at usb-0000:00:12.2-3, high speed
8 [UART16550A ]: Serial - Serial MIDI (UART16550A)
Serial MIDI (UART16550A) [Soundcanvas] at 0x3f8, irq 4
9 [VirMIDI ]: VirMIDI - VirMIDI
Virtual MIDI Card 1
10 [Dummy ]: Dummy - Dummy
Dummy 1
11 [Live ]: EMU10K1 - SB Live! Value [CT4670]
SB Live! Value [CT4670] (rev.5, serial:0x201102) at 0xec00, irq 21
12 [pcsp ]: PC-Speaker - pcsp
Internal PC-Speaker at port 0x61
13 [AudioFire2 ]: FireWorks - AudioFire2
Echo Digital Audio AudioFire2 (v3.2) at fw1.0, S400
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