From: Clemens Ladisch <clemens@ladisch.de>
To: Damien Zammit <damien.zammit@gmail.com>, alsa-devel@alsa-project.org
Cc: tiwai@suse.de, Damien Zammit <damien@zamaudio.com>
Subject: Re: [PATCH 2/3 v4] ALSA: usb-audio: Add mixer control for Digidesign mbox 1 clock source
Date: Mon, 10 Nov 2014 10:47:53 +0100 [thread overview]
Message-ID: <546089C9.1020301@ladisch.de> (raw)
In-Reply-To: <1415612437-5557-3-git-send-email-damien@zamaudio.com>
Damien Zammit wrote:
> This patch provides the infrastructure for the Digidesign Mbox 1
> to have a mixer control for selecting the clock source.
> Valid options are Internal and S/PDIF external sync.
> A non-documented command is sent to the device to enable this feature
> found by reverse engineering and bus snooping.
>
> +++ b/sound/usb/mixer_quirks.c
> +static int snd_mbox1_switch_put(struct snd_kcontrol *kctl,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> ...
> + down_read(&chip->shutdown_rwsem);
When I wrote "semaphore", I meant this one.
Regards,
Clemens
next prev parent reply other threads:[~2014-11-10 9:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-10 9:40 [PATCH 0/3 v4] Digidesign Mbox 1 enhancements Damien Zammit
2014-11-10 9:40 ` [PATCH 1/3 v4] ALSA: usb-audio: Move mutex define to more general location Damien Zammit
2014-11-10 9:47 ` Clemens Ladisch
2014-11-10 9:48 ` Takashi Iwai
2014-11-10 9:40 ` [PATCH 2/3 v4] ALSA: usb-audio: Add mixer control for Digidesign mbox 1 clock source Damien Zammit
2014-11-10 9:47 ` Clemens Ladisch [this message]
2014-11-10 9:50 ` Takashi Iwai
2014-11-10 9:40 ` [PATCH 3/3 v4] ALSA: usb-audio: Add duplex mode for Digidesign Mbox 1 and enable mixer Damien Zammit
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