xref: /openbmc/linux/include/uapi/sound/tlv.h (revision 2c684d89)
1 /*
2  *   This program is free software; you can redistribute it and/or modify
3  *   it under the terms of the GNU General Public License as published by
4  *   the Free Software Foundation; either version 2 of the License, or
5  *   (at your option) any later version.
6  *
7  *   This program is distributed in the hope that it will be useful,
8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
10  *   GNU General Public License for more details.
11  */
12 
13 #ifndef __UAPI_SOUND_TLV_H
14 #define __UAPI_SOUND_TLV_H
15 
16 #define SNDRV_CTL_TLVT_CONTAINER 0	/* one level down - group of TLVs */
17 #define SNDRV_CTL_TLVT_DB_SCALE	1       /* dB scale */
18 #define SNDRV_CTL_TLVT_DB_LINEAR 2	/* linear volume */
19 #define SNDRV_CTL_TLVT_DB_RANGE 3	/* dB range container */
20 #define SNDRV_CTL_TLVT_DB_MINMAX 4	/* dB scale with min/max */
21 #define SNDRV_CTL_TLVT_DB_MINMAX_MUTE 5	/* dB scale with min/max with mute */
22 
23 /*
24  * channel-mapping TLV items
25  *  TLV length must match with num_channels
26  */
27 #define SNDRV_CTL_TLVT_CHMAP_FIXED	0x101	/* fixed channel position */
28 #define SNDRV_CTL_TLVT_CHMAP_VAR	0x102	/* channels freely swappable */
29 #define SNDRV_CTL_TLVT_CHMAP_PAIRED	0x103	/* pair-wise swappable */
30 
31 #endif
32