diff options
| author | Liam Girdwood <liam.r.girdwood@linux.intel.com> | 2015-05-29 21:06:15 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-06-04 11:40:03 +0300 |
| commit | 932ae8809469770a07ce19d6967d2ce303befa08 (patch) | |
| tree | 78e7eea9be478698732589de449489f82c18f48f /include/uapi/sound/tlv.h | |
| parent | 8a9782346dccd82cf912552735bda619de4efd8c (diff) | |
| download | linux-932ae8809469770a07ce19d6967d2ce303befa08.tar.xz | |
ALSA: topology: Export ID types for TLV controls.
Make sure userspace can define TLV controls for topology using the correct
type numbers and channel mappings.
Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/uapi/sound/tlv.h')
| -rw-r--r-- | include/uapi/sound/tlv.h | 31 |
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 000000000000..ffc4f203146c --- /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 |