From aa669b64a333fad33ed19d819dbe6893fcd8e847 Mon Sep 17 00:00:00 2001
From: polkaulfield <mr.tamuraa@gmail.com>
Date: Mon, 5 Jun 2023 17:24:53 +0200
Subject: [PATCH] Added workaround for apple dac

https://issuetracker.google.com/issues/242221770
---
 sound/usb/mixer.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index f4ea24b5a56d..71e4befece05 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1032,6 +1032,14 @@ static void volume_control_quirks(struct usb_mixer_elem_info *cval,
 		}
 		break;
 
+	case USB_ID(0x05ac, 0x110a): /* Apple USB C to 3.5mm adapter */
+		if(!strcmp(kctl->id.name, "PCM Playback Volume")){
+			/* Set PCM Playback Volume for channel 1 and 2 to maximum supported volume */
+			snd_usb_set_cur_mix_value(cval, 1, 0, cval->max);
+			snd_usb_set_cur_mix_value(cval, 2, 1, cval->max);
+		}
+		break;
+
 	case USB_ID(0x046d, 0x0807): /* Logitech Webcam C500 */
 	case USB_ID(0x046d, 0x0808):
 	case USB_ID(0x046d, 0x0809):