[PATCH] OPL4 support

[PATCH] OPL4 support

[Clemens Ladisch]

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This adds support for the mixer and wavetable synthesizer of OPL4 chips.

The OPL4 can be used with OPTi 82C928/Mozart, 82C929 and 82C924 cards
(82C925 and 82C93x have an integrated OPL3 and don't support an external
OPLx chip).

Added/changed files:
+++ new/alsa-driver/include/amagic.h    Sun Mar 23 22:40:20 2003
+++ new/alsa-driver/include/opl4.h      Sun Mar 23 22:59:40 2003
+++ new/alsa-driver/isa/Makefile        Sun Mar 23 23:01:54 2003
+++ new/alsa-driver/isa/opl4/Makefile   Sun Mar 23 23:06:42 2003
+++ new/alsa-driver/isa/opl4/opl4_lib.c Sun Mar 23 22:58:46 2003
+++ new/alsa-driver/isa/opl4/opl4_local.h       Sun Mar 23 22:58:51 2003
+++ new/alsa-driver/isa/opl4/opl4_mixer.c       Sun Mar 23 22:58:55 2003
+++ new/alsa-driver/isa/opl4/opl4_proc.c        Sun Mar 23 22:59:01 2003
+++ new/alsa-driver/isa/opl4/opl4_seq.c Sun Mar 23 22:59:04 2003
+++ new/alsa-driver/isa/opl4/opl4_synth.c       Sun Mar 23 22:59:06 2003
+++ new/alsa-driver/isa/opl4/yrw801.c   Sun Mar 23 22:59:10 2003
+++ new/alsa-driver/isa/opti9xx/opti92x-ad1848.c        Sun Mar 23 22:44:41 2003
+++ new/alsa-driver/utils/Modules.dep   Sun Mar 23 22:46:55 2003
+++ new/alsa-kernel/drivers/opl3/opl3_lib.c     Sun Mar 23 22:48:31 2003
+++ new/alsa-kernel/drivers/opl3/opl3_seq.c     Sun Mar 23 22:49:42 2003
+++ new/alsa-kernel/drivers/opl3/opl3_synth.c   Sun Mar 23 22:51:53 2003
+++ new/alsa-kernel/include/opl3.h      Sun Mar 23 22:56:18 2003
+++ new/alsa-kernel/isa/opti9xx/opti92x-ad1848.c        Sun Mar 23 22:36:07 2003

The changes in alsa-kernel/.../opti92x-ad1848.c are protected by the
USE_OPL4 symbol which is defined in alsa-driver/.../opti92x-ad1848.c.

The changes in alsa-kernel/drivers/opl3/*.c involve modifications of the
OPL3's mode register which would clear the NEW2 bit (which enables OPL4
registers). Those register writes had been used to restrict the OPL3 to
OPL2 compatibility, which IMHO isn't necessary, so I removed them. :)


Clemens

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Re: [PATCH] OPL4 support

[Jaroslav Kysela]

On Mon, 24 Mar 2003, Clemens Ladisch wrote:

> 
> This adds support for the mixer and wavetable synthesizer of OPL4 chips.
> 
> The OPL4 can be used with OPTi 82C928/Mozart, 82C929 and 82C924 cards
> (82C925 and 82C93x have an integrated OPL3 and don't support an external
> OPLx chip).

Is there any reason why this code is in isa/opl4? The code looks generic, 
so we can put it to drivers/opl4 as well.

						Jaroslav

-----
Jaroslav Kysela <perex@suse.cz>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs




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Re: [PATCH] OPL4 support

[Clemens Ladisch]

Jaroslav Kysela wrote:
> On Mon, 24 Mar 2003, Clemens Ladisch wrote:
> > This adds support for the mixer and wavetable synthesizer of OPL4 chips.
> >
> > The OPL4 can be used with OPTi 82C928/Mozart, 82C929 and 82C924 cards
> > (82C925 and 82C93x have an integrated OPL3 and don't support an external
> > OPLx chip).
>
> Is there any reason why this code is in isa/opl4? The code looks generic,
> so we can put it to drivers/opl4 as well.

The OPL4 has never been used except with the above ISA cards AFAIK.
Anyway, either directory is fine with me.


Regards,
Clemens




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Re: [PATCH] OPL4 support

[Takashi Iwai]

At Mon, 24 Mar 2003 10:33:12 +0100 (MET),
Clemens Ladisch wrote:
> 
> Jaroslav Kysela wrote:
> > On Mon, 24 Mar 2003, Clemens Ladisch wrote:
> > > This adds support for the mixer and wavetable synthesizer of OPL4 chips.
> > >
> > > The OPL4 can be used with OPTi 82C928/Mozart, 82C929 and 82C924 cards
> > > (82C925 and 82C93x have an integrated OPL3 and don't support an external
> > > OPLx chip).
> >
> > Is there any reason why this code is in isa/opl4? The code looks generic,
> > so we can put it to drivers/opl4 as well.
> 
> The OPL4 has never been used except with the above ISA cards AFAIK.
> Anyway, either directory is fine with me.

i vote for drivers/opl4, too, because the brother opl3 is already
there, so it would be easier to find.

(i also don't know any pci (or other bus) cards with opl4, though...)


Takashi


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Re: [PATCH] OPL4 support

[Clemens Ladisch]

Takashi Iwai wrote:
> (i also don't know any pci (or other bus) cards with opl4, though...)

The marketing for the ALS4000 claims it's "compatible with the Yamaha OPL4
wavetable synthesizer", but, judging from the manual, this is a lie. :(


Clemens




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