ALSA: tlv: add DECLARE_TLV_CONTAINER()

Add the DECLARE_TLV_CONTAINER() macro to allow having static
TLVs containing more than one item.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 5 insertions, 0 deletions

diff --git a/include/sound/tlv.h b/include/sound/tlv.h
index 137d1654e8d..a9ff3db3829 100644
--- a/include/sound/tlv.h
+++ b/include/sound/tlv.h
@@ -43,6 +43,11 @@
 #define TLV_LENGTH(...) \
         ((unsigned int)sizeof((const unsigned int[]) { __VA_ARGS__ }))
 
+#define TLV_CONTAINER_ITEM(...) \
+        TLV_ITEM(SNDRV_CTL_TLVT_CONTAINER, __VA_ARGS__)
+#define DECLARE_TLV_CONTAINER(name, ...) \
+        unsigned int name[] = { TLV_CONTAINER_ITEM(__VA_ARGS__) }
+
 #define TLV_DB_SCALE_MASK       0xffff
 #define TLV_DB_SCALE_MUTE       0x10000
 #define TLV_DB_SCALE_ITEM(min, step, mute)                      \