10 Mar
2005
10 Mar
'05
2:13 a.m.
Hi,
I need to develop an audio driver (OSS on kernel 2.4)
for a new hardware. I didn't find any resource
explaining how to do that, besides looking at the
sources of other drivers. Could someone direct me to
an appropriate resource?
Also, I need to build the driver for a target kernel
that is not the one I'm currently running. I'd like to
have the driver building with the target kernel and to
have it included in the config options when I do a
"make menuconfig". Is there an article explaining how
to do that?
Thanks,
-fred
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10 Mar
10 Mar
3:50 a.m.
On Wed, 2005-09-03 at 23:13 -0800, fred doh wrote:
Hi,
I need to develop an audio driver (OSS on kernel 2.4)
for a new hardware. I didn't find any resource
explaining how to do that, besides looking at the
sources of other drivers. Could someone direct me to
an appropriate resource?
Also, I need to build the driver for a target kernel
that is not the one I'm currently running. I'd like to
have the driver building with the target kernel and to
have it included in the config options when I do a
"make menuconfig". Is there an article explaining how
to do that?
Thanks,
-fred
Why on earth would you write an OSS driver for 2.4 at this point in
time?
-DR-
4:16 a.m.
On Thu, 10 Mar, 2005 at 07:42PM -0500, Dave Robillard spake thus:
--
"I'd crawl over an acre of 'Visual This++' and 'Integrated
Development
That' to get to gcc, Emacs, and gdb. Thank you."
(By Vance Petree, Virginia Power)
On Wed, 2005-09-03 at 23:13 -0800, fred doh wrote:
> Hi,
> I need to develop an audio driver (OSS on
kernel 2.4)
> for a new hardware. I didn't find any resource
> explaining how to do that, besides looking at the
> sources of other drivers. Could someone direct me to
> an appropriate resource?
> Also, I need to build the driver for a
target kernel
> that is not the one I'm currently running. I'd like to
> have the driver building with the target kernel and to
> have it included in the config options when I do a
> "make menuconfig". Is there an article explaining how
> to do that?
> Thanks,
> -fred
No offence meant, but from your questions, you have less of a clue
than I do, and I wouldn't fancy writing a driver from scratch.
Are you sure you're not biting off a little too much here?
On the othe hand, even if you give up half way through, you'll
probably have learned a hell of a lot.
But, as Dave says below, why? OSS? 2.4? Are there good reasons for
this?
Why on earth would you write an OSS driver for 2.4 at
this point in
time?
-DR-
4:52 a.m.
Hello,
I need to develop an audio driver (OSS on kernel 2.4)
for a new hardware. I didn't find any resource
explaining how to do that, besides looking at the
sources of other drivers. Could someone direct me to
an appropriate resource?
"Linux Device Drivers, 2nd edition" is free, and can be found here:
http://www.xml.com/ldd/chapter/book/index.html
It covers driver development for the 2.4 kernel.
Should answer any questions you might have.
--heikki
11:56 a.m.
On Wed, 2005-03-09 at 23:13 -0800, fred doh wrote:
Hi,
I need to develop an audio driver (OSS on kernel 2.4)
for a new hardware.
Please don't do that. OSS and 2.4 are both in maintenance mode. Write
an ALSA driver for 2.6.
The kernel developers won't even take new OSS drivers, because it's
scheduled to be removed from the kernel. They also won't take any more
2.4 drivers.
Plus, writing an ALSA driver is WAY easier than writing an OSS driver
because the ALSA middle layer is so much more powerful. For example
compare the OSS and ALSA drivers for the emu10k1. The ALSA driver is
less than half the size, and supports features that OSS does not (like
mmap for multichannel PCM).
Here is how to write an ALSA driver:
http://www.alsa-project.org/~iwai/writing-an-alsa-driver/
Lee
7021
days inactive
7021
days old
linux-audio-dev@lists.linuxaudio.org
4 comments
5 participants
participants (5)
-
Dave Robillard -
fred doh -
Heikki Pura -
james＠dis-dot-dat.net -
Lee Revell