include/linux/usb/audio-v2.h: add more UAC2 details

Also, remove the 'bmControl' field from uac_clock_selector_descriptor,
which was at the wrong offset. This struct is currently unused.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 20 insertions, 1 deletions

diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h
index 8f91be3599c6..383b94ba8c20 100644
--- a/include/linux/usb/audio-v2.h
+++ b/include/linux/usb/audio-v2.h
@@ -41,6 +41,13 @@ struct uac_clock_source_descriptor {
         __u8 iClockSource;
 } __attribute__((packed));
 
+/* bmAttribute fields */
+#define UAC_CLOCK_SOURCE_TYPE_EXT       0x0
+#define UAC_CLOCK_SOURCE_TYPE_INT_FIXED 0x1
+#define UAC_CLOCK_SOURCE_TYPE_INT_VAR   0x2
+#define UAC_CLOCK_SOURCE_TYPE_INT_PROG  0x3
+#define UAC_CLOCK_SOURCE_SYNCED_TO_SOF  (1 << 2)
+
 /* 4.7.2.2 Clock Source Descriptor */
 
 struct uac_clock_selector_descriptor {
@@ -49,8 +56,20 @@ struct uac_clock_selector_descriptor {
         __u8 bDescriptorSubtype;
         __u8 bClockID;
         __u8 bNrInPins;
-        __u8 bmControls;
         __u8 baCSourceID[];
+        /* bmControls, bAssocTerminal and iClockSource omitted */
+} __attribute__((packed));
+
+/* 4.7.2.3 Clock Multiplier Descriptor */
+
+struct uac_clock_multiplier_descriptor {
+        __u8 bLength;
+        __u8 bDescriptorType;
+        __u8 bDescriptorSubtype;
+        __u8 bClockID;
+        __u8 bCSourceID;
+        __u8 bmControls;
+        __u8 iClockMultiplier;
 } __attribute__((packed));
 
 /* 4.7.2.4 Input terminal descriptor */