diff options
Diffstat (limited to 'include/sound/tlv.h')
| -rw-r--r-- | include/sound/tlv.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/sound/tlv.h b/include/sound/tlv.h index 28c65e1ada21..e11e179420a1 100644 --- a/include/sound/tlv.h +++ b/include/sound/tlv.h @@ -74,7 +74,11 @@ #define DECLARE_TLV_DB_LINEAR(name, min_dB, max_dB) \ unsigned int name[] = { TLV_DB_LINEAR_ITEM(min_dB, max_dB) } -/* dB range container */ +/* dB range container: + * Items in dB range container must be ordered by their values and by their + * dB values. This implies that larger values must correspond with larger + * dB values (which is also required for all other mixer controls). + */ /* Each item is: <min> <max> <TLV> */ #define TLV_DB_RANGE_ITEM(...) \ TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__) |