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ALSA: usb-audio: Add dB range mapping for Sennheiser Communications Headset PC 8

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commit ab2165e2e6 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>
This commit is contained in:
Timo Gurr 2021-05-03 13:08:22 +02:00 • committed by Greg Kroah-Hartman
commit 12fea3cb22
1 changed files with 12 additions and 0 deletions
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12
sound/usb/mixer_maps.c
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@ -337,6 +337,13 @@ static const struct usbmix_name_map bose_companion5_map[] = {
{ 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
@ -593,6 +600,11 @@ static const struct usbmix_ctl_map usbmix_ctl_maps[] = {
.id = USB_ID(0x17aa, 0x1046),
.map = lenovo_p620_rear_map,
},
{
/* Sennheiser Communications Headset [PC 8] */
.id = USB_ID(0x1395, 0x0025),
.map = sennheiser_pc8_map,
},
{ 0 } /* terminator */
};