3 files changed, 40 insertions, 3 deletions
diff --git a/include/sound/hda_codec.h b/include/sound/hda_codec.h
index cc7c8d42d4fd..2a1d1ad44d66 100644
--- a/include/sound/hda_codec.h
+++ b/include/sound/hda_codec.h
@@ -281,9 +281,6 @@ struct hda_codec {
 	unsigned long jackpoll_interval; /* In jiffies. Zero means no poll, rely on unsol events */
 	struct delayed_work jackpoll_work;
 
-	/* jack detection */
-	struct snd_array jacks;
-
 	int depop_delay; /* depop delay in ms, -1 for default delay time */
 
 	/* fix-up list */
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index f475293d0668..612a17e375d0 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -358,6 +358,9 @@ struct hdac_bus {
 	bool align_bdle_4k:1;		/* BDLE align 4K boundary */
 	bool reverse_assign:1;		/* assign devices in reverse order */
 	bool corbrp_self_clear:1;	/* CORBRP clears itself after reset */
+	bool polling_mode:1;
+
+	int poll_count;
 
 	int bdl_pos_adj;		/* BDL position adjustment */
 
diff --git a/include/uapi/linux/usb/audio.h b/include/uapi/linux/usb/audio.h
index ddc5396800aa..76b7c3f6cd0d 100644
--- a/include/uapi/linux/usb/audio.h
+++ b/include/uapi/linux/usb/audio.h
@@ -450,6 +450,43 @@ static inline __u8 *uac_processing_unit_specific(struct uac_processing_unit_desc
 	}
 }
 
+/*
+ * Extension Unit (XU) has almost compatible layout with Processing Unit, but
+ * on UAC2, it has a different bmControls size (bControlSize); it's 1 byte for
+ * XU while 2 bytes for PU.  The last iExtension field is a one-byte index as
+ * well as iProcessing field of PU.
+ */
+static inline __u8 uac_extension_unit_bControlSize(struct uac_processing_unit_descriptor *desc,
+						   int protocol)
+{
+	switch (protocol) {
+	case UAC_VERSION_1:
+		return desc->baSourceID[desc->bNrInPins + 4];
+	case UAC_VERSION_2:
+		return 1; /* in UAC2, this value is constant */
+	case UAC_VERSION_3:
+		return 4; /* in UAC3, this value is constant */
+	default:
+		return 1;
+	}
+}
+
+static inline __u8 uac_extension_unit_iExtension(struct uac_processing_unit_descriptor *desc,
+						 int protocol)
+{
+	__u8 control_size = uac_extension_unit_bControlSize(desc, protocol);
+
+	switch (protocol) {
+	case UAC_VERSION_1:
+	case UAC_VERSION_2:
+	default:
+		return *(uac_processing_unit_bmControls(desc, protocol)
+			 + control_size);
+	case UAC_VERSION_3:
+		return 0; /* UAC3 does not have this field */
+	}
+}
+
 /* 4.5.2 Class-Specific AS Interface Descriptor */
 struct uac1_as_header_descriptor {
 	__u8  bLength;			/* in bytes: 7 */