From: Curtis Malainey <cujomalainey@google.com>
To: Jaroslav Kysela <perex@perex.cz>
Cc: Curtis Malainey <cujomalainey@chromium.org>,
Mark Brown <broonie@kernel.org>,
ALSA development <alsa-devel@alsa-project.org>
Subject: Re: [alsa-devel] [PATCH 06/11] ucm: docs: Add DisableSoftwareVolume
Date: Mon, 11 Nov 2019 10:51:49 -0800 [thread overview]
Message-ID: <CAOReqxjWove6=9x+Hm0-xEJ_4-iocZo4fnwzV73-sxobTTuCyQ@mail.gmail.com> (raw)
In-Reply-To: <cedaf20b-6752-5f49-64c4-0f3abec8244c@perex.cz>
On Mon, Nov 11, 2019 at 7:22 AM Jaroslav Kysela <perex@perex.cz> wrote:
>
> Dne 07. 11. 19 v 2:58 Curtis Malainey napsal(a):
> > Some userspace audio servers might default to software volume, this
> > allows the ucm to force its behaviour
> >
> > Signed-off-by: Curtis Malainey <cujomalainey@chromium.org>
> > ---
> > include/use-case.h | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/include/use-case.h b/include/use-case.h
> > index 05628303..1aeaf9d4 100644
> > --- a/include/use-case.h
> > +++ b/include/use-case.h
> > @@ -334,6 +334,8 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
> > * - This is used on platform where reported buffer level is not accurate.
> > * E.g. "512", which holds 512 samples in device buffer. Note: this will
> > * increase latency.
> > + * - DisableSoftwareVolume
> > + * - Set to "1" to force userspace to use hardware volume controls
> > */
> > int snd_use_case_get(snd_use_case_mgr_t *uc_mgr,
> > const char *identifier,
> >
>
>
> My understanding is that if the hardware volume controls are defined in UCM,
> then the UCM user (audio server) should use them. Otherwise, the software
> volume control should be applied. I don't see the reason to have this info
> doubled.
>
> Jaroslav
>
+Jimmy Cheng-Yi Chiang can you clarify in what context CRAS might need
this value? The only cases I see are for Chat 150 C and Jabra SPEAK
810. There are no volume mixers associated with these files.
> --
> Jaroslav Kysela <perex@perex.cz>
> Linux Sound Maintainer; ALSA Project; Red Hat, Inc.
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next prev parent reply other threads:[~2019-11-11 18:52 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-07 1:57 [alsa-devel] [PATCH 01/11] ucm: docs: Add JackName value Curtis Malainey
2019-11-07 1:57 ` [alsa-devel] [PATCH 02/11] ucm: docs: Add JackType value Curtis Malainey
2019-11-11 13:39 ` Jaroslav Kysela
2019-11-29 16:01 ` Jaroslav Kysela
2019-12-03 3:22 ` Curtis Malainey
2019-12-03 8:39 ` Jaroslav Kysela
2019-11-07 1:58 ` [alsa-devel] [PATCH 03/11] ucm: docs: add value JackSwitch Curtis Malainey
2019-11-11 13:30 ` Jaroslav Kysela
2019-11-07 1:58 ` [alsa-devel] [PATCH 04/11] ucm: docs: Add EDID File value Curtis Malainey
2019-11-11 15:18 ` Jaroslav Kysela
2019-11-07 1:58 ` [alsa-devel] [PATCH 05/11] ucm: docs: Add MinBufferLevel value Curtis Malainey
2019-11-11 14:55 ` Jaroslav Kysela
2019-11-11 15:19 ` Jaroslav Kysela
2019-11-07 1:58 ` [alsa-devel] [PATCH 06/11] ucm: docs: Add DisableSoftwareVolume Curtis Malainey
2019-11-11 15:22 ` Jaroslav Kysela
2019-11-11 18:51 ` Curtis Malainey [this message]
2019-11-11 19:11 ` Curtis Malainey
2019-11-07 1:58 ` [alsa-devel] [PATCH 07/11] ucm: docs: Add CaptureChannelMap Curtis Malainey
2019-11-11 15:30 ` Jaroslav Kysela
2019-11-11 22:08 ` Curtis Malainey
2019-11-07 1:58 ` [alsa-devel] [PATCH 08/11] " Curtis Malainey
2019-11-07 2:02 ` Curtis Malainey
2019-11-11 15:31 ` Jaroslav Kysela
2019-11-11 22:09 ` Curtis Malainey
2019-11-07 1:58 ` [alsa-devel] [PATCH 09/11] ucm: docs: Add EchoReferenceDev Curtis Malainey
2019-11-11 15:36 ` Jaroslav Kysela
2019-11-11 18:42 ` Curtis Malainey
2019-11-07 1:58 ` [alsa-devel] [PATCH 10/11] ucm: docs: Add SoftwareGain Curtis Malainey
2019-11-11 15:33 ` Jaroslav Kysela
2019-11-11 18:46 ` Curtis Malainey
2019-11-07 1:58 ` [alsa-devel] [PATCH 11/11] ucm: docs: Add DefaultNodeGain Curtis Malainey
2019-11-11 15:34 ` Jaroslav Kysela
2019-11-11 18:44 ` Curtis Malainey
2019-11-11 9:44 ` [alsa-devel] [PATCH 01/11] ucm: docs: Add JackName value Kai Vehmanen
2019-11-11 13:26 ` Jaroslav Kysela
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