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-rw-r--r--include/uapi/sound/tlv.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/uapi/sound/tlv.h b/include/uapi/sound/tlv.h
new file mode 100644
index 000000000..ffc4f2031
--- /dev/null
+++ b/include/uapi/sound/tlv.h
@@ -0,0 +1,31 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __UAPI_SOUND_TLV_H
+#define __UAPI_SOUND_TLV_H
+
+#define SNDRV_CTL_TLVT_CONTAINER 0 /* one level down - group of TLVs */
+#define SNDRV_CTL_TLVT_DB_SCALE 1 /* dB scale */
+#define SNDRV_CTL_TLVT_DB_LINEAR 2 /* linear volume */
+#define SNDRV_CTL_TLVT_DB_RANGE 3 /* dB range container */
+#define SNDRV_CTL_TLVT_DB_MINMAX 4 /* dB scale with min/max */
+#define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5 /* dB scale with min/max with mute */
+
+/*
+ * channel-mapping TLV items
+ * TLV length must match with num_channels
+ */
+#define SNDRV_CTL_TLVT_CHMAP_FIXED 0x101 /* fixed channel position */
+#define SNDRV_CTL_TLVT_CHMAP_VAR 0x102 /* channels freely swappable */
+#define SNDRV_CTL_TLVT_CHMAP_PAIRED 0x103 /* pair-wise swappable */
+
+#endif