* [Buildroot] Alsa problem with arm 2.6.23.1 and uclibc
@ 2007-11-16 10:27 ing. Federico Fuga
2007-11-16 11:44 ` Ivan Kuten
0 siblings, 1 reply; 3+ messages in thread
From: ing. Federico Fuga @ 2007-11-16 10:27 UTC (permalink / raw)
To: buildroot
Hi,
Do you know of any problem with alsa and uclibc and kernel 2.6.23 on arm?
I built a uclibc buildroot, now all works fine except alsa. Aplay can
see the devices, but alsactl cannot change the mixer levels:
# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: EMX270 [EM-X270], device 0: AC97 HiFi AC97 HiFi-AC97-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: EMX270 [EM-X270], device 1: AC97 Aux AC97 Aux-AC97-1 []
Subdevices: 1/1
Subdevice #0: subdevice #0
# aplay -L
default:CARD=EMX270
EM-X270,
Default Audio Device
null
Discard all samples (playback) or generate zero samples (capture)
# alsactl restore
alsactl: set_control:1159: Cannot write control '2:0:0:Speaker Playback
Volume:0' : Inappropriate ioctl for device
# alsactl store -f /root/sample
alsactl: get_control:218: Cannot read control '2,0,0,Speaker Playback
Volume,0': Inappropriate ioctl for device
The devices in /dev/snd seems ok:
# ls /dev/snd/ -l
crw-rw-rw- 1 root root 116, 0 Dec 31 17:00 controlC0
crw-rw-rw- 1 root root 116, 24 Dec 31 17:00 pcmC0D0c
crw-rw-rw- 1 root root 116, 16 Dec 31 17:00 pcmC0D0p
crw-rw-rw- 1 root root 116, 17 Dec 31 17:00 pcmC0D1p
crw-rw-rw- 1 root root 116, 33 Dec 31 17:00 timer
The strange thing is that in an Angstrom Linux based on glibc and the
same kernel and alsa-lib/utils/libasound version (same patches, same
all) it works without problems.
last few lines of strace output of alsactl restore :
open("/usr/lib/libasound.so.2", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0755, st_size=959649, ...}) = 0
close(4) = 0
open("/dev/snd/controlC0", O_RDONLY) = 4
close(4) = 0
open("/dev/snd/controlC0", O_RDWR) = 4
ioctl(4, USBDEVFS_CONTROL, 0xbef809cc) = 0
ioctl(4, UI_DEV_CREATE, 0xbef80ab0) = 0
ioctl(4, USBDEVFS_CONNECTINFO, 0xbef80634) = 0
ioctl(4, USBDEVFS_HUB_PORTINFO, 0xbef80748) = -1 ENOTTY (Inappropriate
ioctl for device)
Any idea?
Thank you in advance!
best regards,
ing. Federico Fuga
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Buildroot] Alsa problem with arm 2.6.23.1 and uclibc
2007-11-16 10:27 [Buildroot] Alsa problem with arm 2.6.23.1 and uclibc ing. Federico Fuga
@ 2007-11-16 11:44 ` Ivan Kuten
2007-11-16 16:50 ` ing. Federico Fuga
0 siblings, 1 reply; 3+ messages in thread
From: Ivan Kuten @ 2007-11-16 11:44 UTC (permalink / raw)
To: buildroot
Hi Federico!
I'm observing the same problem with ALSA as you.
> ioctl(4, USBDEVFS_CONTROL, 0xbef809cc) = 0
> ioctl(4, UI_DEV_CREATE, 0xbef80ab0) = 0
> ioctl(4, USBDEVFS_CONNECTINFO, 0xbef80634) = 0
> ioctl(4, USBDEVFS_HUB_PORTINFO, 0xbef80748) = -1 ENOTTY (Inappropriate
> ioctl for device)
Think these lines are key to understanding what the problem is.
Regards,
Ivan
ing. Federico Fuga wrote:
> Hi,
>
> Do you know of any problem with alsa and uclibc and kernel 2.6.23 on arm?
> I built a uclibc buildroot, now all works fine except alsa. Aplay can
> see the devices, but alsactl cannot change the mixer levels:
>
> # aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: EMX270 [EM-X270], device 0: AC97 HiFi AC97 HiFi-AC97-0 []
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> card 0: EMX270 [EM-X270], device 1: AC97 Aux AC97 Aux-AC97-1 []
> Subdevices: 1/1
> Subdevice #0: subdevice #0
> # aplay -L
> default:CARD=EMX270
> EM-X270,
> Default Audio Device
> null
> Discard all samples (playback) or generate zero samples (capture)
> # alsactl restore
> alsactl: set_control:1159: Cannot write control '2:0:0:Speaker Playback
> Volume:0' : Inappropriate ioctl for device
> # alsactl store -f /root/sample
> alsactl: get_control:218: Cannot read control '2,0,0,Speaker Playback
> Volume,0': Inappropriate ioctl for device
>
> The devices in /dev/snd seems ok:
>
> # ls /dev/snd/ -l
> crw-rw-rw- 1 root root 116, 0 Dec 31 17:00 controlC0
> crw-rw-rw- 1 root root 116, 24 Dec 31 17:00 pcmC0D0c
> crw-rw-rw- 1 root root 116, 16 Dec 31 17:00 pcmC0D0p
> crw-rw-rw- 1 root root 116, 17 Dec 31 17:00 pcmC0D1p
> crw-rw-rw- 1 root root 116, 33 Dec 31 17:00 timer
>
> The strange thing is that in an Angstrom Linux based on glibc and the
> same kernel and alsa-lib/utils/libasound version (same patches, same
> all) it works without problems.
> last few lines of strace output of alsactl restore :
>
> open("/usr/lib/libasound.so.2", O_RDONLY) = 4
> fstat(4, {st_mode=S_IFREG|0755, st_size=959649, ...}) = 0
> close(4) = 0
> open("/dev/snd/controlC0", O_RDONLY) = 4
> close(4) = 0
> open("/dev/snd/controlC0", O_RDWR) = 4
> ioctl(4, USBDEVFS_CONTROL, 0xbef809cc) = 0
> ioctl(4, UI_DEV_CREATE, 0xbef80ab0) = 0
> ioctl(4, USBDEVFS_CONNECTINFO, 0xbef80634) = 0
> ioctl(4, USBDEVFS_HUB_PORTINFO, 0xbef80748) = -1 ENOTTY (Inappropriate
> ioctl for device)
>
> Any idea?
>
> Thank you in advance!
> best regards,
>
> ing. Federico Fuga
>
>
> _______________________________________________
> buildroot mailing list
> buildroot at uclibc.org
> http://busybox.net/mailman/listinfo/buildroot
--
--------------------------------
Embedded Linux engineer,
Promwad Company: http://www.promwad.com/
Homepage : http://www.ivankuten.com/
--------------------------------
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Buildroot] Alsa problem with arm 2.6.23.1 and uclibc
2007-11-16 11:44 ` Ivan Kuten
@ 2007-11-16 16:50 ` ing. Federico Fuga
0 siblings, 0 replies; 3+ messages in thread
From: ing. Federico Fuga @ 2007-11-16 16:50 UTC (permalink / raw)
To: buildroot
Hi Ivan,
which kernel version and kernel headers are you using? Mine are 2.6.23.1
and 2.6.23, but now I am trying to move the kernel headers to 2.6.21
(Angstrom linux works without problems, but are based on different
kernel headers).
uclibc I am using are 0.9.29, alsa 1.0.14.
The failing ioctl is identical both in the working (Angstrom) and not
working versions, and since the kernel is the same (really the same!) I
am thinking that is only a problem between the "glue" of uclibc and
kernel...
I'll keep you informed.
Regards,
ing. Federico Fuga
(sorry for the duplicate mail!)
Ivan Kuten ha scritto:
> > Hi Federico!
> >
> > I'm observing the same problem with ALSA as you.
> >
> >
>
>> >> ioctl(4, USBDEVFS_CONTROL, 0xbef809cc) = 0
>> >> ioctl(4, UI_DEV_CREATE, 0xbef80ab0) = 0
>> >> ioctl(4, USBDEVFS_CONNECTINFO, 0xbef80634) = 0
>> >> ioctl(4, USBDEVFS_HUB_PORTINFO, 0xbef80748) = -1 ENOTTY (Inappropriate
>> >> ioctl for device)
>> >>
>>
> >
> > Think these lines are key to understanding what the problem is.
> >
> > Regards,
> > Ivan
> >
> >
> >
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2007-11-16 10:27 [Buildroot] Alsa problem with arm 2.6.23.1 and uclibc ing. Federico Fuga
2007-11-16 11:44 ` Ivan Kuten
2007-11-16 16:50 ` ing. Federico Fuga
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