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authorKai-Heng Feng <kai.heng.feng@canonical.com>2020-08-10 21:31:06 +0800
committerTakashi Iwai <tiwai@suse.de>2020-08-10 16:02:18 +0200
commit34dedd2a83b241ba6aeb290260313c65dc58660e (patch)
tree1cf4fc6176737cdc24ab6ec4f1194e9267542062 /sound/usb
parent6e8596172ee1cd46ec0bfd5adcf4ff86371478b6 (diff)
downloadlinux-34dedd2a83b241ba6aeb290260313c65dc58660e.tar.bz2
ALSA: usb-audio: Disable Lenovo P620 Rear line-in volume control
The USB device (0x17aa:0x1046) that support Lenovo P620 rear panel line-in claim to support volume control, but it doens't seem to have an AMP, so when line-in volume lowers below 80, nothing gets recorded anymore. Disable the volume control to workaround the issue. Fixes: f8c11eb7da4a ("ALSA: usb-audio: Add support for Lenovo ThinkStation P620") Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20200810133108.31580-1-kai.heng.feng@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/mixer_maps.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index c369c81e74c4..5b43e9e40e49 100644
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -371,6 +371,7 @@ static const struct usbmix_name_map asus_rog_map[] = {
};
static const struct usbmix_name_map lenovo_p620_rear_map[] = {
+ { 19, NULL, 2 }, /* FU, Volume */
{ 19, NULL, 12 }, /* FU, Input Gain Pad */
{}
};