From: Timo Gurr timo.gurr@gmail.com
commit ab2165e2e6ed17345ffa8ee88ca764e8788ebcd7 upstream.
The decibel volume range contains a negative maximum value resulting in pipewire complaining about the device and effectivly having no sound output. The wrong values also resulted in the headset sounding muted already at a mixer level of about ~25%.
PipeWire BugLink: https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/1049
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212897 Signed-off-by: Timo Gurr timo.gurr@gmail.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20210503110822.10222-1-tiwai@suse.de Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- sound/usb/mixer_maps.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
--- a/sound/usb/mixer_maps.c +++ b/sound/usb/mixer_maps.c @@ -337,6 +337,13 @@ static struct usbmix_name_map bose_compa { 0 } /* terminator */ };
+/* Sennheiser Communications Headset [PC 8], the dB value is reported as -6 negative maximum */ +static const struct usbmix_dB_map sennheiser_pc8_dB = {-9500, 0}; +static const struct usbmix_name_map sennheiser_pc8_map[] = { + { 9, NULL, .dB = &sennheiser_pc8_dB }, + { 0 } /* terminator */ +}; + /* * Dell usb dock with ALC4020 codec had a firmware problem where it got * screwed up when zero volume is passed; just skip it as a workaround @@ -619,5 +626,10 @@ static struct usbmix_ctl_map uac3_badd_u .id = UAC3_FUNCTION_SUBCLASS_SPEAKERPHONE, .map = uac3_badd_speakerphone_map, }, + { + /* Sennheiser Communications Headset [PC 8] */ + .id = USB_ID(0x1395, 0x0025), + .map = sennheiser_pc8_map, + }, { 0 } /* terminator */ };