diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2011-11-20 17:17:35 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-07-16 10:02:18 +0200 |
| commit | bf1d1c9b6179faa3bc32cee882462bc8eebde25d (patch) | |
| tree | aa3cc05edf9606d2bad631b2661bfd67ddfe8942 | |
| parent | 570aef5de13df21e42eeb90db67e2436bee91bd4 (diff) | |
ALSA: tlv: add DECLARE_TLV_DB_RANGE()
Add a DECLARE_TLV_DB_RANGE() macro so that dB range information
can be specified without having to count the items manually for
TLV_DB_RANGE_HEAD().
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | include/sound/tlv.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/sound/tlv.h b/include/sound/tlv.h index a9ff3db3829..a64d8fe3f85 100644 --- a/include/sound/tlv.h +++ b/include/sound/tlv.h @@ -76,6 +76,10 @@ /* dB range container */ /* Each item is: <min> <max> <TLV> */ +#define TLV_DB_RANGE_ITEM(...) \ + TLV_ITEM(SNDRV_CTL_TLVT_DB_RANGE, __VA_ARGS__) +#define DECLARE_TLV_DB_RANGE(name, ...) \ + unsigned int name[] = { TLV_DB_RANGE_ITEM(__VA_ARGS__) } /* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */ #define TLV_DB_RANGE_HEAD(num) \ SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int) |