From: Mailing Lists <maillist@superlative.org>
To: alsa-devel@alsa-project.org
Cc: Takashi Iwai <tiwai@suse.de>, Mike Oliphant <oliphant@nostatic.org>
Subject: Re: [alsa-devel] [PATCH] ALSA: usb-audio: Disable quirks for BOSS Katana amplifiers
Date: Wed, 14 Oct 2020 13:17:35 +0100 [thread overview]
Message-ID: <CAPMdQDmY7CdbrHyOwhJNFBREQ0EO1SKufRdN_YR6TG4zmJzXpA@mail.gmail.com> (raw)
In-Reply-To: <s5hftjriy1q.wl-tiwai@suse.de>
Following up on this, it appears there are a bunch of the newer-generation
Roland/Boss devices which need similar treatment.
So far I have tested the GT-1, the GT-001, and the BR-80, and others have
reported the RC-300 as working with similar modifications. I have been
using the following change to the code in pcm.c
set_sync_ep_implicit_fb_quirk:
case USB_ID(0x0582, 0x01d8): /* BOSS Katana */
case USB_ID(0x0582, 0x0130): /* BOSS Micro BR-80 */
case USB_ID(0x0582, 0x0138): /* BOSS RC-300 */
case USB_ID(0x0582, 0x01d6): /* BOSS GT-1 */
case USB_ID(0x0582, 0x01e5): /* BOSS GT-001 */
/* BOSS Katana amplifiers and many other newer BOSS devices do not need
quirks */
There's probably others too, such as the GT-100 (I believe the GT-001 and
GT-100 have similar hardware).
My question is, should this just be submitted as a patch to pcm.c or would
it be better handled in quirks and, if so, how?
Or something else?
Personally, I dislike the approach of hard-coding exceptions into core code
as it seems that's what quirks are there for, but there seems to be a whole
bunch of exceptions in there already.
Cheers,
Keith
On Thu, 17 Oct 2019 at 09:20, Takashi Iwai <tiwai@suse.de> wrote:
> On Fri, 11 Oct 2019 19:19:36 +0200,
> Szabolcs Szőke wrote:
> >
> > BOSS Katana amplifiers cannot be used for recording or playback if quirks
> > are applied
> >
> > BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=195223
> > Signed-off-by: Szabolcs Szőke <szszoke.code@gmail.com>
>
> Applied now. Thanks.
>
>
> Takashi
>
> >
> > ---
> > sound/usb/pcm.c | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c
> > index 33cd26763c0e..daadb0c66eee 100644
> > --- a/sound/usb/pcm.c
> > +++ b/sound/usb/pcm.c
> > @@ -348,6 +348,9 @@ static int set_sync_ep_implicit_fb_quirk(struct
> snd_usb_substream *subs,
> > ep = 0x84;
> > ifnum = 0;
> > goto add_sync_ep_from_ifnum;
> > + case USB_ID(0x0582, 0x01d8): /* BOSS Katana */
> > + /* BOSS Katana amplifiers do not need quirks */
> > + return 0;
> > }
> >
> > if (attr == USB_ENDPOINT_SYNC_ASYNC &&
> > --
> > 2.20.1
> >
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel@alsa-project.org
> https://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>
--
--
Keith A Milner
next prev parent reply other threads:[~2020-10-14 12:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191011171937.8013-1-szszoke.code@gmail.com>
2019-10-17 8:19 ` [alsa-devel] [PATCH] ALSA: usb-audio: Disable quirks for BOSS Katana amplifiers Takashi Iwai
2019-10-17 14:38 ` Szabolcs Szőke
2020-10-14 12:17 ` Mailing Lists [this message]
2020-10-14 13:09 ` Takashi Iwai
2020-10-14 13:33 ` Mailing Lists
2020-10-14 13:47 ` Takashi Iwai
2020-10-14 13:56 ` Mailing Lists
2020-10-14 14:00 ` Takashi Iwai
2020-10-14 14:31 ` Mailing Lists
2020-10-14 14:55 ` Takashi Iwai
2020-10-14 15:19 ` Mike Oliphant
2020-10-14 15:35 ` Mailing Lists
2020-10-14 16:11 ` Mike Oliphant
2020-10-14 16:34 ` Mailing Lists
2020-10-14 16:46 ` Mike Oliphant
2020-10-14 17:23 ` Mailing Lists
2020-10-14 18:17 ` Mike Oliphant
2020-10-14 20:57 ` Keith Milner
2020-10-14 21:49 ` Mike Oliphant
2020-10-15 12:37 ` Takashi Iwai
2020-10-16 1:21 ` Mike Oliphant
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