diff options
| author | Takashi Iwai <tiwai@suse.de> | 2017-08-16 14:18:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-24 17:02:35 -0700 |
| commit | 669c8ab896a2f96a1d49cfa1f5efaaf64c0f6aaa (patch) | |
| tree | 4f52d11acc0a0ba6532802235fa6ba1b0212ef66 /ipc/ipc_sysctl.c | |
| parent | f600f9c43346a7f26e9b808b827adfaf5e73958b (diff) | |
ALSA: usb-audio: Add mute TLV for playback volumes on C-Media devices
commit 0f174b3525a43bd51f9397394763925e0ebe7bc7 upstream.
C-Media devices (at least some models) mute the playback stream when
volumes are set to the minimum value. But this isn't informed via TLV
and the user-space, typically PulseAudio, gets confused as if it's
still played in a low volume.
This patch adds the new flag, min_mute, to struct usb_mixer_elem_info
for indicating that the mixer element is with the minimum-mute volume.
This flag is set for known C-Media devices in
snd_usb_mixer_fu_apply_quirk() in turn.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=196669
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'ipc/ipc_sysctl.c')
0 files changed, 0 insertions, 0 deletions