On 11-02-28 01:53 PM, Darren Hart wrote:
On 02/22/2011 06:49 PM, Bruce Ashfield wrote:
Richard/Saul,
Hi Bruce, I'm a little late to the party, but was wondering what your
thoughts are on the whole OSS thing. It seems we should be as consistent
as possible in our various Yocto Linux kernel images. Do we want to
support OSS? I recall several years ago that OSS had drivers that Alsa
did not and was needed for some boards - is that still the case? My
feeling is, if possible, I'd like to just have alsa in our kernels and
help reduce the raging redundancy in the audio API space.
alsa is the defacto / first choice for me.
That's partially why I chose to make this an
optional config block for this feature. That way
it is optional, and only applied to the specific qemu
images that we decided to add it for. All other kernels
and BSPs are unaffected.
If/when we get ALSA working for these qemu based machines,
we can easily drop this. But it looks like the only avenue
for the sound support immediately, so we slide it in
in as shallow a manner as possible.
Any and all patches to convert back to ALSA will be
happily merged! :)
Bruce
--
Darren
This Fixes [BUGID #488 #734]
As discussed, this enables the configuration options for qemu
audio for x86/x86-64 (limited to this for now). I did build and
boot testing (but couldn't directly test audio) for the impacted
qemu boards.
The commit message from the patch tells the rest of the story:
Enable audio for qemux86/qemux86-64 via the following kernel
configuration options.
CONFIG_SOUND_OSS_CORE=y
CONFIG_SOUND_OSS_CORE_PRECLAIM=ythe
CONFIG_SND_RAWMIDI=m
CONFIG_SND_SEQUENCER=y
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=y
CONFIG_SND_PCM_OSS=y
CONFIG_SND_PCM_OSS_PLUGINS=y
CONFIG_SND_SEQUENCER_OSS=y
CONFIG_SND_RAWMIDI_SEQ=m
CONFIG_SND_AC97_CODEC=m
CONFIG_SND_ENS1370=m
CONFIG_SND_INTEL8X0=m
CONFIG_AC97_BUS=m
The mechanism to trigger these options is in the form of an
optional kernel feature that is only appended for qemux86
and qemux86-64, but is contained within the kernel tree.
This allows several things:
- the options to be available/shared for all boards
- the options to be in tree
- to not add the options to every board, which unecessarily
bloats the default configuration.
Pull URL: git://git.pokylinux.org/poky-contrib.git
Branch: zedd/kernel
Browse: http://git.pokylinux.org/cgit.cgi/poky-contrib/log/?h=zedd/kernel
Thanks,
Bruce Ashfield<bruce.ashfi...@windriver.com>
---
Bruce Ashfield (1):
linux-yocto: enable audio for selected qemu targets
meta/classes/kernel-yocto.bbclass | 4 +++-
.../conf/distro/include/poky-default-revisions.inc | 4 ++--
meta/recipes-kernel/linux/linux-yocto_git.bb | 6 ++++--
3 files changed, 9 insertions(+), 5 deletions(-)
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