Commit bf1d1c9b authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Takashi Iwai

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: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 570aef5d
...@@ -76,6 +76,10 @@ ...@@ -76,6 +76,10 @@
/* dB range container */ /* dB range container */
/* Each item is: <min> <max> <TLV> */ /* 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 */ /* The below assumes that each item TLV is 4 words like DB_SCALE or LINEAR */
#define TLV_DB_RANGE_HEAD(num) \ #define TLV_DB_RANGE_HEAD(num) \
SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int) SNDRV_CTL_TLVT_DB_RANGE, 6 * (num) * sizeof(unsigned int)
......
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