ALSA: usb-audio: Add quirk for Microsoft Modern Wireless Headset

Microsoft Modern Wireless Headset (appearing on the host as "Microsoft
USB Link") has a playback and a capture mixer volume/switch, but they
are fairly broken.  The descriptor reports wrong dB ranges for
playback, and the capture volume/switch don't influence on the actual
recording at all.  Moreover, there seem instabilities in the
connection, and at best, we should disable the runtime PM.

So this ended up with a quirk entry for:
- Correct the playback dB range;
  I picked up some reasonable values but it's a guess work
- Disable the capture mixer;
  it's completely useless and confuses PA/PW
- Suppress get-sample-rate, apply the delay for message handling,
  and suppress the auto-suspend

The behavior of the wheel control on the headset is somehow flaky,
too, but it's an issue of HID.

Link: https://bugzilla.suse.com/show_bug.cgi?id=1207129
Link: https://lore.kernel.org/r/20230725092057.15115-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/usb/mixer_maps.c b/sound/usb/mixer_maps.c
index f4bd1e8ae4b6c562a3fa68abf9e8afbea8e603dc..23260aa1919d322d77a3ed8154fb3e0efd9c83a8 100644 (file)
--- a/sound/usb/mixer_maps.c
+++ b/sound/usb/mixer_maps.c
@@ -374,6 +374,15 @@ static const struct usbmix_name_map corsair_virtuoso_map[] = {
        { 0 }
 };
 
+/* Microsoft USB Link headset */
+/* a guess work: raw playback volume values are from 2 to 129 */
+static const struct usbmix_dB_map ms_usb_link_dB = { -3225, 0, true };
+static const struct usbmix_name_map ms_usb_link_map[] = {
+       { 9, NULL, .dB = &ms_usb_link_dB },
+       { 10, NULL }, /* Headset Capture volume; seems non-working, disabled */
+       { 0 }   /* terminator */
+};
+
 /* ASUS ROG Zenith II with Realtek ALC1220-VB */
 static const struct usbmix_name_map asus_zenith_ii_map[] = {
        { 19, NULL, 12 }, /* FU, Input Gain Pad - broken response, disabled */
@@ -668,6 +677,11 @@ static const struct usbmix_ctl_map usbmix_ctl_maps[] = {
                .id = USB_ID(0x1395, 0x0025),
                .map = sennheiser_pc8_map,
        },
+       {
+               /* Microsoft USB Link headset */
+               .id = USB_ID(0x045e, 0x083c),
+               .map = ms_usb_link_map,
+       },
        { 0 } /* terminator */
 };
 

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 30bcb80b1cb8a4f88af601cbf2039739153a3e65..f9e200309b9e4219234119082046c49432d8b2e5 100644 (file)
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2013,6 +2013,9 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
                   QUIRK_FLAG_IGNORE_CTL_ERROR),
        DEVICE_FLG(0x041e, 0x4080, /* Creative Live Cam VF0610 */
                   QUIRK_FLAG_GET_SAMPLE_RATE),
+       DEVICE_FLG(0x045e, 0x083c, /* MS USB Link headset */
+                  QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY |
+                  QUIRK_FLAG_DISABLE_AUTOSUSPEND),
        DEVICE_FLG(0x046d, 0x084c, /* Logitech ConferenceCam Connect */
                   QUIRK_FLAG_GET_SAMPLE_RATE | QUIRK_FLAG_CTL_MSG_DELAY_1M),
        DEVICE_FLG(0x046d, 0x0991, /* Logitech QuickCam Pro */